What's the difference between scolex and tapeworm?
Scolex
Definition:
(n.) The embryo produced directly from the egg in a metagenetic series, especially the larva of a tapeworm or other parasitic worm. See Illust. of Echinococcus.
(n.) One of the Scolecida.
Example Sentences:
(1) A tissue reaction to C. bovis was inflammatory in nature and originated always at the site at which the invaginated scolex opened into the surface.
(2) When the oncosphere of H. nana undergoes differentiation and development into the mature tapeworm, the infected mouse first produces anti-oncosphere antibody, followed by anti-cysticercoid, anti-adult scolex and finally anti-strobila (other than scolex region) antibodies of IgG, IgM and IgA isotypes as detected by indirect immunofluorescent antibody test.
(3) This high [57Co]Cbl concentration in the plerocercoid scolex was bound to protein and appears to be maintained by a complex homeostatic mechanism in association with directional transport of [57Co]Cbl to the scolex with ultimate depletion along the length of the body.
(4) Second invagination of the formed scolex and neck into the internal cyst was the final stage of cysticercoid formation.
(5) Histologic examination showed the diagnostic scolex of the parasite only after subserial sections of the biopsy specimen.
(6) Microscopic examination showed the racemosal type of cysticercus but no scolex was found.
(7) A more intense fluorescence was observed in the tegumentary cytons of the bladder wall and in the lumen of the spiral canal of the invaginated scolex.
(8) Calcareous corpuscles are smaller and more numerous in the scolex and neck than in the cyst wall.
(9) In the zone of contact of the tegument of scolex and neck with follicles of the cercomer an increased secretion (the microapocrine type) of the tegument, disturbance of the microvillous tegument of the cercomer's follicles and their destruction are observed.
(10) The computed tomographic features of giant cysticercal cysts are: thin walled cystic lesions containing clear fluid, localised thickening of the wall (probably representing the scolex), absence of pericyst oedema, and the presence of associated smaller and more typical cysticercal larval forms.
(11) Monoclonal antibodies were generated from mice immunized with scolex protein antigen of Cysticercus cellulosae.
(12) The content of the cyst was histopathologically verified as consisting of a mixture of echinococcal scolexes and chondrosarcomatous tissue.
(13) P. turkestanica differs from the most similar species P. papillosa Hunkeler, 1970 by the measures of the scolex and rostellum, the number of rostellar hooks and the size of embryonic hooks.
(14) For the first 5 days after infection, the scolex tegument showed no detectable differences in ultrastructure compared with that of "control" worms from either Wistar rats or immunosuppressed C57 mice.
(15) The importance of scolex immobility and energy conservation in relation to cyst impermeability is discussed.
(16) Chemical signals, isolated from the small intestine of fed hosts, which stimulate migration behaviour in vivo do not alter the behaviour of the scolex or strobila in vitro.
(17) Of the serological methods for the diagnosis of hydatid cyst immuno-fluorescent technique using frozen section of the scolex as antigen has given encouraging results.
(18) Increase in cyst size and appearance of pericystic edema were observed as early as 24 hr, followed by gradual degeneration of the scolex and cyst contents.
(19) Four of the 7 excreted the worm and the scolex was recognized in three of the four.
(20) Removal of the scolex, containing the worm's cerebral ganglia, did not significantly alter these thermal responses.
Tapeworm
Definition:
(n.) Any one of numerous species of cestode worms belonging to Taenia and many allied genera. The body is long, flat, and composed of numerous segments or proglottids varying in shape, those toward the end of the body being much larger and longer than the anterior ones, and containing the fully developed sexual organs. The head is small, destitute of a mouth, but furnished with two or more suckers (which vary greatly in shape in different genera), and sometimes, also, with hooks for adhesion to the walls of the intestines of the animals in which they are parasitic. The larvae (see Cysticercus) live in the flesh of various creatures, and when swallowed by another animal of the right species develop into the mature tapeworm in its intestine. See Illustration in Appendix.
Example Sentences:
(1) The plerocercoid stage of the tapeworm Spirometra mansonoides produces a functional analog of human growth hormone (hGH).
(2) The drug of choice against all kinds of tapeworms is Niclosamide.
(3) Untreated control dogs did not shed tapeworms of either species during a 3-day period of posttreatment fecal collections, but did have tapeworms at the time of necropsy.
(4) Hymenolepis nana (von Siebold, 1852), the dwarf tapeworm causing hymenolepiasis, has been reported to be the common intestinal cestode of rodents and man throughout the world.
(5) The anthelmintic effects of anti-tapeworm drugs, bithionol, paromomycin sulphate, flubendazole and mebendazole on immature and mature Hymenolepis nana in mice were compared.
(6) Infection in humans or animals by the common tapeworm of dogs and cats (Dipylidium caninum) requires ingestion of the intermediate host, the dog or cat flea containing the larva (cysticercoids) of the agent.
(7) The diphyllobothriid tapeworms are primarily restricted to the northern Canada.
(8) One hundred and seven 4-quinolinehydrazones were synthesized and tested in vivo against the tapeworm Hymenolepis nana.
(9) When the oncosphere of H. nana undergoes differentiation and development into the mature tapeworm, the infected mouse first produces anti-oncosphere antibody, followed by anti-cysticercoid, anti-adult scolex and finally anti-strobila (other than scolex region) antibodies of IgG, IgM and IgA isotypes as detected by indirect immunofluorescent antibody test.
(10) Factor analysis grouped the variables considered into 5 factors: the first was associated with veterinary assistance; the second with the animal's function and the presence of whipworms, hookworms and tapeworms; the third with cohabitation, origin and presence of coccidia; the fourth with the presence of fresh meat (cooked, raw or frozen) in the diet, age and positivity for ascarids; the fifth with sex and the presence of gastroenteric conditions.
(11) H. citelli was also shown to be expelled simultaneously during the rejection phase of H. diminuta in concurrent infections, indicating the susceptibility of the former tapeworm to the rejection mechanism initiated by the latter.
(12) The cytological structure of the tegument of H. nana corresponds in general to that of other tapeworms.
(13) The development of the tapeworm Khawia sinensis has been observed up to the stage of sexually mature parasites releasing eggs in an experimentally infected definitive host (Cyprinus carpio) at 15-16 degrees C. Juvenile, maturing, adult and gravid tapeworms were found 2-12, 19-24, 36-62, and 78-91 days post infection, respectively.
(14) Antigens of Taenia solium can be demonstrated by ELISA technique in stool samples of tapeworm carriers.
(15) However, immunocytochemically distinct subpopulations of perikarya and regionally defined areas of ectocytoplasm were identified along the tapeworm strobila by the use of monoclonal antibodies raised against a preparation of isolated tegument.
(16) An evaluation of possible predisposing factors provided further evidence of the important role of the tapeworm Anoplocephala perfoliata in initiating intussusception involving the ileum and caecum.
(17) Eggs of a tapeworm, Diphyllobothrium sp (probably D dendriticum), were detected in feces of a healthy, 5-month-old, Siberian Husky.
(18) These results were similar to other studies with different geographic strains of the T. saginata-like tapeworm in the Far East.
(19) The drug was found to be highly toxic to tapeworms.
(20) Mean villus height, crypt depth and the number of 5-HT-positive enterochromaffin (EC) cells have been examined in two regions of the small intestine (20-30% and 60-70% distance from the pylorus) of male, 6 to 8-week-old, C57 mice following a 5-cysticercoid infection of the rat tapeworm, Hymenolepis diminuta.