(n.) The larval form of a trematode worm having the shape of a tadpole, with its body terminated by a tail-like appendage.
Example Sentences:
(1) Between the 24th and 29th day mature daughter sporocysts with fully developed cercariae ready to emerge, or already emerged, could be seen in the digestive gland of the snail.
(2) The cercaria, microcercous in type, is liberated and actively penetrates a second terrestrial pulmonate where development to the free metacercarial stage takes place in the pericardial cavity.
(3) Low concentrations of cercaricides are toxic both for cercariae and parthenites from the liver of mollusks and for freely swimming cercariae.
(4) The cercariae shed from the snails were again exposed to several species of fresh water snails in order to observe metacercarial formation in the snails and their infectivity to final hosts.
(5) Fluorescein isothiocyanate (FITC)-ricin exhibited binding to schistosomula and adult worms, but not to cercariae or to freshly transformed schistosomula.
(6) Immunoreactivity is strong in cercariae, but is essentially absent in miracidia.
(7) Cercariae in anaerobiosis, however, excreted as much as 15 times more lactate than under air.
(8) Twenty-eight Friesland calves were infested at 7 to 11 months of age with 5 000-45 OOO cercariae of Schistosoma mattheei.
(9) In vitro blastogenic responses of peripheral blood mononuclear cells (PBMN) to heterogeneous schistosome-derived antigens (eggs, SEA; adult worms, AW; and cercariae, CERC) were evaluated.
(10) Although vaccination of animals with these antigens does not result in consistent levels of protection exceeding 50%, the reproducible induction of about 80% protection with live attenuated cercariae indicates that immunization against schistosomiasis is achievable.
(11) The cercariae of the above species, recorded in Laos for the first time, are illustrated and their morphology is briefly described.
(12) Using the same mixture of cercariae, a Gelada baboon (Theropithecus gelada) could be infected by both schistosomes, but a dog was completely refractory.
(13) The model was then used to design a peptide inhibitor with 4-fold increased solubility, and a series of synthetic inhibitors were tested against live cercariae invading human skin to confirm that predictions of the model were also applicable in a biologic assay.
(14) Cystophorous cercariae from Retusa obtusa (Montagu) (Gastropoda, Opisthobranchia, Retusidae) develop into adults of Brachyphallus crenatus (Rudolphi, 1802) Odhner, 1905 (Hemiuridae).
(15) Preliminary results indicated that immunization with attenuated cercariae was capable of imparting protective immunity in mice.
(16) From original observations and from data in the literature, a key to cercariae of British strigeoids for which life-cycles are known has been compiled.
(17) Results of the infection of golden hamsters with different dozes of cercariae have shown that with the increase of dozes of infectious material the infection rate of helminths rises during the experimental intestinal schistosomiasis only to a definite level, which is attained by the injection of cercariae into the portal vein in dozes lower than those used for subcutaneous infection.
(18) The comparison between several cercariae of Microphallidae parasites of Birds had allowed to separate the ciliary characters of the two genera Microphallus and Maritrema.
(19) Experiments were conducted on the duration of life in sea water of three species of cystophorous cercariae from the Barents sea.
(20) The higher susceptibility of B. glabrata results in greater power of penetration into mice tegument on the part of the cercariae.
Trematode
Definition:
(n.) One of the Trematodea. Also used adjectively.
Example Sentences:
(1) The adults of the trematode occurring in the nasal sinuses and posterior nasal passage of the dolphins are considered as practically harmless for the host but thier eggs, aspirated deep into the bronchial tree, may initiate a foreign-body of inflammatory reaction in the lungs and continuous aspiration of such eggs may provoke a chronic pneumonia condition.
(2) Mebendazole can be used against numerous nematode-infections (Ascariasis, Trichuriasis, Oxyuriasis, Ancylostomiasis), Niclosamide against cestode-infections (Taeniasis, Hymenolepiasis, Diphyllobothriasis), whereas, Praziquantel is applied against trematode-infections.
(3) Hand contamination with the infectious metacercariae of the digenetic trematode Nanophyetus salmincola (family Troglotrematidae) occurred during the handling of fresh-killed, juvenile coho salmon, Oncorhynchus kisutch.
(4) Ecdysteroids have been detected in trematode parasites and in several species of gastropod snails.
(5) Bithynia tentaculata, being the only snail species that was very numerous in the lake, was the first as well as the main second intermediate host; adult trematodes were found exclusively in the tench, Tinca tinca.
(6) Trematode diseases have remained the same, but the tools (1) to exploit the innate ability of cells to replicate and produce biological products upon demand, (2) to manipulate the genetic makeup of an organism, (3) and to biologically or synthetically manufacture peptides have provided scientists with new reagents for diagnosing, treating, preventing and controlling trematode diseases.
(7) This seems to suggest that the rediae of this species are incompatible with other trematodes in the snail.
(8) The objectives of this study were to 1) determine if exposure of M line or 10-R2 strain Biomphalaria glabrata snails to infection with the trematodes Echinostoma paraensei and Schistosoma mansoni could increase agglutinating activity in snail hemolymph, and 2) identify particular hemolymph molecules with such activity.
(9) Localization of catecholamines in the nervous system of 12 species of Trematodes parthenitae from marine mollusks has been studied using the method of glyoxilic acid-induced fluorescence.
(10) All patients were treated with a single dose of praziquantel (50 mg kg-1 body weight) and control stool tests performed on the 15th, 30th and 60th days post-treatment showed no trematode eggs.
(11) A study of the ultrafine structure, hysto- and biochemistry of trematodes will enable us to associate better the morphology and the function of organs and to go deeper into the functional morphology and functional biochemistry.
(12) The possession of common antigens by three trematode parasites which commonly occur together in ruminants in the tropics, Fasciola gigantica, Dicrocoelium hospes and Schistosoma bovis was studied in relation to the reliability of serodiagnosis of infection with these helminths.
(13) Infection or immunization with subcellular antigens of Fasciola hepatica confers high levels of immunity to a challenge infection with another trematode, Schistosoma mansoni.
(14) In vitro studies with Paramphistomum microbothrium indicated that the trematode is capable of synthesizing its complex lipids using exogenous substrates.
(15) These studies are revealing additional sites in trematodes that may be important for the development of new and more selective chemotherapeutic agents.
(16) In some trematodes, the caeca, especially in the brush border, and the tegument, subtegumental cells and testes, were reactive to the enzymes.
(17) New hosts are presented for the nematodes Cucullanus pinnai, Spirocamallanus inopinatus and Travnema travnema, for the trematode Pararhipidocotyle jeffersoni and for the acanthocephalan Gorytocephalus spectabilis.
(18) Further investigations are necessary to identify the species of this trematode and to understand if it is a true human parasite or a pseudoparasite.
(19) Trematodes found in 10 Numenius americanus from the Galveston area included Pelmatostomum americanum sp.
(20) Surgical repair of an inguinal hernia in a 19-year-old man in Honduras revealed massive numbers of small granulomata containing trematode eggs on the omentum and other peritoneal surfaces.