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Chilomastix

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feeding groove that acts as the cell mouth. This fourth, posteriorly orientated flagellum is vaned, due to the presence of two wing-like structures that extend from it. The feeding groove and fourth flagellum are positioned in the anterior region of the body and work together, involved in the function of endocytosis, enabling the movement of food particles towards the feeding groove. The flagella possess the 9+2 structure, common in flagellated eukaryotes. A single distinct nucleus is in the very anterior region of the body near the cytoplasm.
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feeding to survive, thus once the food source begins to run out, stimulation of encystation occurs. Both trophozoites and cysts are passed in the feces but only cysts can survive outside of the host and are therefore the stage of infection. When exposed to the external environment, the trophozoites disintegrate while the cysts remain living in bodies of water until they are again taken up by the next host, continuing the cycle of transmission.
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Due to the non-pathogenic nature of this taxon, no treatments are required except to relieve the discomfort of the diarrhea in extreme cases. If the infected patient is showing other symptoms of disease, it is most likely due to the presence of another parasitic pathogen and further testing should be
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Cysts are lemon or pear shaped, typically rounder and smaller than the trophozoite. One end of the cyst cell is rounded while the other end has a slight, blunt protuberance. The cyst wall is of even thickness except in the region of the protuberance where it is even thicker. Organelles found in the
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have been described as pyriform, lemon-shaped or pear-shaped in various species with a rounded anterior and an elongated posterior end that comes to a point. Four flagella are present in all species; three flagella extend anteriorly and move freely, while the fourth flagellum is located within the
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and reside within the intestine of the host. Trophozoites feed on the host's intestinal contents such as bacteria through endocytosis. Once the intestinal contents begin to dry out, the trophozoites then release a cyst wall through the process of encystation. Cysts are resistant and do not require
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Brugerolle, Guy (November 1973). "Etude Ultrastructurale du Trophozoite et du Kyste chez le Genre Chilomastix Alexeieff, 1910 (Zoomastigophorea, Retortamonadida Grassé, 1952)" [Ultrastructural study of the Trophozoite and the Cyst in the Genus Chilomastix Alexeieff, 1910 (Zoomastigophorea,
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often feeds on bacteria living inside the gut of the host. The cytosomal flagellum aids in bringing intestinal bacteria closer towards the cell, allowing the membrane to wrap around the food particle and pinch off to form a food vacuole within the cell body. The cyst stage is non-feeding.
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trophozoite, including the nucleus and cytostome, remain in the cyst stage and are usually viewable when stained under the microscope. While the vaned flagellum is present in the cyst stage, the three free anterior flagella are not, thus making the cyst non-motile.
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Hendarto, Joko; Mizuno, Tetsushi; Hidayati, Anggi P.N.; Rozi, Ismail E.; Asih, Puji B.S.; Syafruddin, Din; Yoshikawa, Hisao; Matsubayashi, Makoto; Tokoro, Masaharu (April 2019). "Three monophyletic clusters in Retortamonas species isolated from vertebrates".
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Bernard, Catherine; Simpson, Alastair G.B.; Patterson, David J. (August 1997). "An ultrastructural study of a free-living retortamonad, Chilomastix cuspidata (Larsen & Patterson, 1990) n. comb. (Retortamonadida, Protista)".
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The cyst stage of the organism if often found in feces where it can thrive away from a host, until it is ingested. The trophozoite stage resides in the intestine of its host where it feeds on intestinal bacteria.
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The nomenclature of this genus has been under much dispute throughout history, switching between many different taxonomic names. The first known report of this genus was in 1854 when patients in
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is one of the more studied species in this genus due to the fact it is a human parasite. Therefore, much of the information on this genus is based on what is known about this one species.
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Ponce Gordo, F; Herrera, S; Castro, A.T; Garcı́a DurĂĄn, B; Martı́nez Dı́az, R.A (July 2002). "Parasites from farmed ostriches (Struthio camelus) and rheas (Rhea americana) in Europe".
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This commonly causes confusion during diagnosis. Diagnosis is made upon finding one or both cyst and trophozoite forms in feces samples of an infected patient.
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being its own genus was urged by Alexeieffe in 1912 who was the first to thoroughly describe a species belonging to this genus. Although he initially called it
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is considered a cosmopolitan species, having been found in marine, freshwater and brackish waters. This genus, however, is more prevalent in warmer climates.
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Cancrini, G; Bartoloni, A; Nuñez, L; Paradisi, F (1988). "Intestinal parasites in the Camiri, Gutierrez and Boyuibe areas, Santa Cruz Department, Bolivia".
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exists as a cyst stage that is responsible for transmission and a trophozoite stage which is also known as the feeding stage. Transmission occurs via the
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Kulda, Jaroslav; NohĂœnkovĂĄ, Eva; Čepička, Ivan (2017). "Retortamonadida (With Notes on Carpediemonas-Like Organisms and Caviomonadidae)".
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a wide range of vertebrate hosts, but is known to be typically non-pathogenic, and is therefore classified as harmless. The life cycle of
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cysts is ingested. The uptake of cysts by the host leads to the excystation of one trophozoite per cyst, which then multiply via
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species are often transmitted along with other intestinal parasites, many of which are pathogenic and do cause diseases such as
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Hegner, Robert W. (1924). "Giardia and Chilomastix from Monkeys, Giardia from the Wild Cat and Balantidium from the Sheep".
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and are non-pathogenic. They are typically asymptomatic as severity of infection is usually no higher than seen in
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Levecke, Bruno; Dorny, Pierre; Geurden, Thomas; Vercammen, Francis; Vercruysse, Jozef (September 2007).
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Aléxéieff 1909 non Risso 1826 non Hedwig 1806 non Latreille 1825 non Griffith 1836 non Agassiz 1839
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showed infection by a parasitic flagellate. The human parasite was classified under the name of
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Species within this genus are known to parasitize a wide variety of mammalian hosts including
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Leiva, Lamberto (December 1921). "Observations on Chilomastix intestinalis Kuczinski".
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var. 1 by Davaine (1854). In 1910, it was reclassified as its own species and named
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pointing anteriorly and a fourth contained within the feeding groove.
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All species within this genus are flagellated, structured with three
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The life cycle is direct, requiring no intermediate host or vector.
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has a resistant cyst stage responsible for transmission and a
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Barnham, M. (November 1977). "Is Chilomastix harmless?".
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Brooke, Marion Murphy; Melvin, Dorothy M. (April 1964).
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Common intestinal protozoa of man: life cycle charts
1463: 917:"Chilomastix mesnili and a method for its culture" 641:in 1910, he then referred it is as its own genus, 633:however, was before 1920. The initial proposal of 1270: 1268: 589:stage, which is recognized as the feeding stage. 234:(Larsen & Patterson 1990) Bernard et al. 1997 1400:Dictionary of Microbiology and Molecular Biology 738:when water contaminated with feces that contain 290:RodrĂ­guez LĂłpez-Neyra & SuĂĄrez-PeregrĂ­n 1932 843:cells are not bilaterally symmetrical and lack 783:species are generally regarded as harmless gut 995: 993: 991: 989: 987: 964: 962: 960: 8: 1041: 1039: 1037: 1035: 1033: 1031: 1029: 1027: 1025: 1023: 910: 53:and the enclosing membrane can be seen, the 1432:Fun With Microbiology (What's Buggin' You?) 1065: 1063: 1061: 1059: 1057: 908: 906: 904: 902: 900: 898: 896: 894: 892: 890: 1451: 1398:Singleton, Paul; Sainsbury, Diana (2006). 31: 20: 1193: 940: 1306:Martin, Elizabeth; Hine, Robert (2015). 718:, as well as invertebrate hosts such as 886: 581:lacks an intermediate host or vector. 969:Adamson, Martin (September 8, 2004). 915:Boeck, William C. (1 February 1921). 7: 1594:6ff780f6-a8cc-4161-b613-67664c6a0f61 1276:Retortamonadida Grasse, 1952)]. 921:The Journal of Experimental Medicine 1444:The Korean Society for Parasitology 978:Introductory Parasitology, Biol 328 1290:10.1111/j.1550-7408.1973.tb03577.x 755:Within the intestine of the host, 14: 498:(da Fonseca 1915) da Fonseca 1920 1143:European Journal of Protistology 855:, and an undulating membrane. 218:(AlĂ©xĂ©ieff 1909) AlĂ©xĂ©ieff 1910 1402:. John Wiley & Sons, Ltd. 661:has a worldwide distribution; 1: 1223:10.1016/S0304-4017(02)00104-8 1155:10.1016/S0932-4739(97)80003-X 1014:10.1016/S0140-6736(77)91911-0 1259:10.1016/j.parint.2018.12.004 1186:10.1016/j.vetpar.2007.06.020 1345:10.1007/978-3-319-28149-0_3 1314:. Oxford University Press. 1278:The Journal of Protozoology 1107:The Journal of Parasitology 1072:The Journal of Parasitology 722:have also been documented. 266:Martin & Robertson 1911 1659: 1247:Parasitology International 569:but does possess a single 488:Prowazek & Werner 1915 702:. Bird hosts, as seen in 654:Geographical distribution 629:. The origin of the name 469: 462: 163: 158: 63:Scientific classification 61: 39: 30: 23: 1337:Handbook of the Protists 795:, known to cause watery 1312:A Dictionary of Biology 1211:Veterinary Parasitology 1174:Veterinary Parasitology 971:"Unicellular Parasites" 545:is a genus of pyriform 1339:. pp. 1247–1278. 836:Morphology and anatomy 759:trophozoites feed via 1440:"Chilomastix mesnili" 1428:"Chilomastix mesnili" 615:Charles Morley Wenyon 46:Chilomastix cuspidata 933:10.1084/jem.33.2.147 639:Tetramitus caulleryi 619:Chilomastix davainei 597:History of knowledge 16:Genus of flagellates 1008:(8047): 1077–1078. 789:Chilomastix mesnili 663:Chilomastix mesnili 649:Habitat and ecology 623:Chilomastix mesnili 591:Chilomastix mesnili 41:Electron micrograph 751:Feeding Mechanisms 611:Macrostoma mesnili 607:Cercomonas hominis 549:within the family 258:Krishnamurthy 1970 1630: 1629: 1602:Open Tree of Life 1457:Taxon identifiers 1409:978-0-470-05698-1 1354:978-3-319-28147-6 1321:978-0-19-871437-8 538: 537: 532: 522: 512: 499: 489: 479: 456: 448: 440: 422: 414: 402: 394: 381: 373: 360: 353: 346: 338: 330: 323: 315: 307: 303:C. hyderabadensis 299: 291: 283: 275: 267: 259: 251: 243: 235: 227: 219: 211: 203: 195: 187: 179: 171: 1650: 1643:Metamonad genera 1623: 1622: 1610: 1609: 1597: 1596: 1587: 1586: 1574: 1573: 1561: 1560: 1548: 1547: 1535: 1534: 1525: 1524: 1512: 1511: 1499: 1498: 1497: 1484: 1483: 1482: 1452: 1447: 1435: 1434:. 18 April 2014. 1414: 1413: 1395: 1386: 1385: 1365: 1359: 1358: 1332: 1326: 1325: 1303: 1294: 1293: 1272: 1263: 1262: 1241: 1235: 1234: 1217:(1–2): 137–160. 1206: 1200: 1199: 1197: 1180:(3–4): 236–246. 1165: 1159: 1158: 1137: 1131: 1130: 1102: 1096: 1095: 1067: 1052: 1051: 1043: 1018: 1017: 997: 982: 981: 975: 966: 955: 954: 944: 912: 863:Trophozoites of 819:Balantidium coli 736:fecal-oral route 669:Microenvironment 551:Retortamonadidae 530: 520: 510: 507:Tetrachilomastix 497: 494:Tetrachilomastix 487: 477: 454: 446: 438: 420: 413: 400: 393:Navarathnam 1971 392: 379: 371: 359: 352: 344: 336: 329: 321: 313: 305: 297: 289: 282:Navarathnam 1971 281: 273: 265: 257: 249: 241: 233: 225: 217: 209: 201: 193: 185: 177: 169: 134:Retortamonadidae 35: 21: 1658: 1657: 1653: 1652: 1651: 1649: 1648: 1647: 1633: 1632: 1631: 1626: 1618: 1613: 1605: 1600: 1592: 1590: 1582: 1577: 1569: 1564: 1556: 1551: 1543: 1538: 1530: 1528: 1520: 1515: 1507: 1502: 1493: 1492: 1487: 1478: 1477: 1472: 1459: 1438: 1426: 1423: 1418: 1417: 1410: 1397: 1396: 1389: 1367: 1366: 1362: 1355: 1334: 1333: 1329: 1322: 1305: 1304: 1297: 1274: 1273: 1266: 1243: 1242: 1238: 1208: 1207: 1203: 1167: 1166: 1162: 1139: 1138: 1134: 1119:10.2307/3270864 1104: 1103: 1099: 1084:10.2307/3270749 1069: 1068: 1055: 1045: 1044: 1021: 999: 998: 985: 980:. pp. 1–2. 973: 968: 967: 958: 914: 913: 888: 883: 874: 861: 853:Golgi apparatus 838: 829: 813:Giardia lamblia 805: 778: 753: 728: 680: 678:Parasitic hosts 671: 656: 651: 599: 563:Golgi apparatus 511:da Fonseca 1915 421:da Fonseca 1916 377:C. nigricollisi 372:da Fonseca 1940 311:C. intestinalis 226:da Fonseca 1916 210:da Fonseca 1915 186:da Fonseca 1915 183:C. bettencourti 154: 153:AlĂ©xĂ©ieff, 1910 151: 150: 136: 124: 122:Retortamonadida 112: 100: 88: 76: 57:has two vanes. 17: 12: 11: 5: 1656: 1654: 1646: 1645: 1635: 1634: 1628: 1627: 1625: 1624: 1611: 1598: 1588: 1575: 1562: 1549: 1536: 1526: 1513: 1500: 1485: 1469: 1467: 1461: 1460: 1455: 1449: 1448: 1436: 1422: 1421:External links 1419: 1416: 1415: 1408: 1387: 1376:(2–3): 263–9. 1370:Parassitologia 1360: 1353: 1327: 1320: 1295: 1284:(5): 574–585. 1264: 1236: 1201: 1195:1854/LU-381836 1160: 1149:(3): 254–265. 1132: 1097: 1053: 1019: 983: 956: 927:(2): 147–175. 885: 884: 882: 879: 873: 870: 860: 857: 837: 834: 828: 825: 804: 801: 777: 774: 752: 749: 744:binary fission 727: 724: 679: 676: 670: 667: 655: 652: 650: 647: 598: 595: 536: 535: 534: 533: 523: 513: 500: 490: 480: 467: 466: 460: 459: 458: 457: 449: 441: 433: 428: 423: 418:C. rosenbuschi 415: 408: 403: 395: 387: 382: 374: 366: 361: 354: 347: 339: 331: 324: 316: 314:Kuczynski 1914 308: 300: 295:C. hemidactyli 292: 287:C. granatensis 284: 276: 268: 260: 252: 244: 236: 228: 220: 212: 204: 202:Moskowitz 1951 196: 194:AlĂ©xĂ©ieff 1912 188: 180: 172: 161: 160: 156: 155: 152: 144: 142: 138: 137: 132: 130: 126: 125: 120: 118: 114: 113: 110:Retortamonadea 108: 106: 102: 101: 96: 94: 90: 89: 84: 82: 78: 77: 72: 70: 66: 65: 59: 58: 37: 36: 28: 27: 15: 13: 10: 9: 6: 4: 3: 2: 1655: 1644: 1641: 1640: 1638: 1621: 1616: 1612: 1608: 1603: 1599: 1595: 1589: 1585: 1580: 1576: 1572: 1567: 1563: 1559: 1554: 1550: 1546: 1541: 1537: 1533: 1527: 1523: 1518: 1514: 1510: 1505: 1501: 1496: 1490: 1486: 1481: 1475: 1471: 1470: 1468: 1466: 1462: 1458: 1453: 1445: 1441: 1437: 1433: 1429: 1425: 1424: 1420: 1411: 1405: 1401: 1394: 1392: 1388: 1383: 1379: 1375: 1371: 1364: 1361: 1356: 1350: 1346: 1342: 1338: 1331: 1328: 1323: 1317: 1313: 1309: 1308:"Endocytosis" 1302: 1300: 1296: 1291: 1287: 1283: 1280:(in French). 1279: 1271: 1269: 1265: 1260: 1256: 1252: 1248: 1240: 1237: 1232: 1228: 1224: 1220: 1216: 1212: 1205: 1202: 1196: 1191: 1187: 1183: 1179: 1175: 1171: 1164: 1161: 1156: 1152: 1148: 1144: 1136: 1133: 1128: 1124: 1120: 1116: 1112: 1108: 1101: 1098: 1093: 1089: 1085: 1081: 1077: 1073: 1066: 1064: 1062: 1060: 1058: 1054: 1049: 1042: 1040: 1038: 1036: 1034: 1032: 1030: 1028: 1026: 1024: 1020: 1015: 1011: 1007: 1003: 996: 994: 992: 990: 988: 984: 979: 972: 965: 963: 961: 957: 952: 948: 943: 938: 934: 930: 926: 922: 918: 911: 909: 907: 905: 903: 901: 899: 897: 895: 893: 891: 887: 880: 878: 871: 869: 866: 858: 856: 854: 850: 846: 842: 835: 833: 826: 824: 822: 820: 815: 814: 809: 802: 800: 798: 794: 793:C. gallinarum 790: 786: 782: 775: 773: 770: 766: 762: 758: 750: 748: 745: 741: 737: 733: 725: 723: 721: 717: 713: 709: 705: 701: 697: 693: 689: 685: 677: 675: 668: 666: 664: 660: 653: 648: 646: 644: 640: 636: 632: 628: 625:) in 1920 by 624: 620: 616: 612: 608: 604: 596: 594: 592: 588: 584: 580: 576: 572: 568: 564: 560: 556: 552: 548: 544: 543: 529: 528: 524: 521:Prowazek 1911 519: 518: 514: 508: 504: 501: 496: 495: 491: 486: 485: 481: 476: 475: 471: 470: 468: 465: 461: 453: 450: 445: 442: 437: 434: 432: 429: 427: 424: 419: 416: 412: 409: 407: 404: 399: 396: 391: 388: 386: 383: 378: 375: 370: 367: 365: 362: 358: 355: 351: 348: 343: 342:C. megamorpha 340: 335: 332: 328: 325: 320: 319:C. instabilis 317: 312: 309: 304: 301: 296: 293: 288: 285: 280: 277: 272: 269: 264: 263:C. gallinarum 261: 256: 253: 248: 245: 240: 237: 232: 229: 224: 221: 216: 213: 208: 205: 200: 197: 192: 189: 184: 181: 176: 175:C. bandicooti 173: 168: 165: 164: 162: 157: 149: 148: 143: 140: 139: 135: 131: 128: 127: 123: 119: 116: 115: 111: 107: 104: 103: 99: 95: 92: 91: 87: 83: 80: 79: 75: 71: 68: 67: 64: 60: 56: 52: 48: 47: 42: 38: 34: 29: 26: 22: 19: 1464: 1443: 1431: 1399: 1373: 1369: 1363: 1336: 1330: 1311: 1281: 1277: 1250: 1246: 1239: 1214: 1210: 1204: 1177: 1173: 1163: 1146: 1142: 1135: 1113:(2): 75–78. 1110: 1106: 1100: 1078:(2): 49–57. 1075: 1071: 1005: 1001: 977: 924: 920: 875: 864: 862: 859:Trophozoites 845:mitochondria 840: 839: 830: 817: 811: 807: 806: 792: 788: 780: 779: 776:Pathogenesis 768: 756: 754: 739: 731: 729: 681: 672: 662: 658: 657: 642: 638: 634: 630: 622: 618: 610: 606: 600: 590: 582: 578: 573:. The genus 567:mitochondria 558: 541: 540: 539: 525: 515: 506: 502: 492: 484:Cyathomastix 482: 472: 451: 443: 435: 430: 425: 417: 410: 405: 397: 389: 384: 376: 368: 363: 356: 349: 345:Abraham 1961 341: 333: 326: 318: 310: 302: 294: 286: 278: 270: 262: 254: 250:Abraham 1961 246: 239:C. echinorum 238: 231:C. cuspidata 230: 222: 215:C. caulleryi 214: 206: 198: 190: 182: 174: 167:C. aulostomi 166: 146: 145: 81:(unranked): 49:. The "9+2" 44: 24: 18: 1509:Chilomastix 1495:Chilomastix 1489:Wikispecies 1465:Chilomastix 865:Chilomastix 841:Chilomastix 808:Chilomastix 781:Chilomastix 769:Chilomastix 761:endocytosis 757:Chilomastix 740:Chilomastix 732:Chilomastix 692:chimpanzees 659:Chilomastix 643:Chilomastix 635:Chilomastix 631:Chilomastix 587:trophozoite 583:Chilomastix 579:Chilomastix 575:parasitizes 561:also lacks 559:Chilomastix 542:Chilomastix 503:Chilomastix 452:C. wenrichi 444:C. undulata 439:Porter 1952 406:C. peccarii 390:C. osmaniae 385:C. olympioi 357:C. motellae 337:Becker 1926 322:Crouch 1936 242:Powers 1936 223:C. cuniculi 147:Chilomastix 25:Chilomastix 1002:The Lancet 881:References 785:commensals 726:Life cycle 645:in 1912. 531:GĂ€bel 1914 474:Macrostoma 447:Skuja 1956 411:C. quadrii 398:C. palmari 350:C. mesnili 298:Madre 1979 279:C. graecae 271:C. giganta 170:Bělaƙ 1921 98:Metamonada 1517:AlgaeBase 1253:: 93–98. 1050:(Report). 827:Treatment 803:Diagnosis 704:ostriches 547:excavates 517:Fanapepea 436:C. tarsii 426:C. simiae 401:Todd 1963 380:Todd 1963 369:C. navasi 306:Todd 1963 255:C. gadrii 207:C. caprae 178:Todd 1963 74:Eukaryota 55:flagellum 1637:Category 1529:BioLib: 1480:Q2963624 1474:Wikidata 1231:12072221 951:19868485 849:axostyle 797:diarrhea 712:chickens 555:flagella 464:Synonyms 455:Nie 1948 364:C. muris 334:C. magna 327:C. kudoi 274:Nie 1948 199:C. bursa 191:C. bocis 159:Species 129:Family: 93:Phylum: 86:Excavata 69:Domain: 1607:1070201 1584:1106361 1571:3236058 1558:2910614 1382:3271990 1127:3270864 1092:3270749 942:2128178 765:vacuole 720:insects 688:monkeys 571:nucleus 527:Difamus 431:C. suis 247:C. equi 141:Genus: 117:Order: 105:Class: 51:axoneme 1620:562608 1591:NZOR: 1532:222924 1406:  1380:  1351:  1318:  1229:  1125:  1090:  949:  939:  832:done. 698:, and 684:humans 627:Kofoid 621:(syn. 1615:WoRMS 1579:IRMNG 1522:51890 1123:JSTOR 1088:JSTOR 974:(PDF) 872:Cysts 847:, an 716:geese 708:rheas 603:Paris 1566:GBIF 1545:3N3V 1404:ISBN 1378:PMID 1349:ISBN 1316:ISBN 1227:PMID 947:PMID 816:and 791:and 714:and 700:pigs 696:apes 565:and 1553:EoL 1540:CoL 1504:AFD 1341:doi 1286:doi 1255:doi 1219:doi 1215:107 1190:hdl 1182:doi 1178:148 1151:doi 1115:doi 1080:doi 1010:doi 1006:310 937:PMC 929:doi 799:. 613:by 43:of 1639:: 1617:: 1604:: 1581:: 1568:: 1555:: 1542:: 1519:: 1506:: 1491:: 1476:: 1442:. 1430:. 1390:^ 1374:30 1372:. 1347:. 1310:. 1298:^ 1282:20 1267:^ 1251:69 1249:. 1225:. 1213:. 1188:. 1176:. 1172:. 1147:33 1145:. 1121:. 1111:11 1109:. 1086:. 1074:. 1056:^ 1022:^ 1004:. 986:^ 976:. 959:^ 945:. 935:. 925:33 923:. 919:. 889:^ 851:, 767:. 710:, 706:, 694:, 690:, 686:, 509:) 1446:. 1412:. 1384:. 1357:. 1343:: 1324:. 1292:. 1288:: 1261:. 1257:: 1233:. 1221:: 1198:. 1192:: 1184:: 1157:. 1153:: 1129:. 1117:: 1094:. 1082:: 1076:8 1016:. 1012:: 953:. 931:: 821:. 505:(

Index

Electron micrograph of "Chilomastix cuspidata". The "9+2" axoneme and the enclosing membrane can be seen, the flagellum has two vanes.
Electron micrograph
Chilomastix cuspidata
axoneme
flagellum
Scientific classification
Eukaryota
Excavata
Metamonada
Retortamonadea
Retortamonadida
Retortamonadidae
Synonyms
Macrostoma
Cyathomastix
Tetrachilomastix
Fanapepea
Difamus
excavates
Retortamonadidae
flagella
Golgi apparatus
mitochondria
nucleus
parasitizes
trophozoite
Paris
Charles Morley Wenyon
Kofoid
humans

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