(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.
Parasitic
Definition:
(a.) Alt. of Parasitical
Example Sentences:
(1) The rise of malaria despite of control measures involves several factors: the house spraying is no more accepted by a large percentage of house holders and the alternative larviciding has only a limited efficacy; the houses of American Indians have no walls to be sprayed; there is a continuous introduction of parasites by migrants.
(2) However, ticks, which failed to finish their feeding and represent a disproportionately great part of the whole parasite's population, die together with them and the parasitic system quickly restores its stability.
(3) One thousand nineteen Wyoming ground squirrels (Spermophilus elegans elegans) from 4 populations in southern Wyoming were examined for intestinal parasites.
(4) Ten or 4% of the administered parasites passed in the feces during the 3 days following the first or second infection, but 32% after the third infection.
(5) However, the degree of inhibition of parasite replication after exposure to rMu-GM-CSF was not as great as after treatment with rMu-IFN-gamma, and much more rMu-GM-CSF than rMu-IFN-gamma was required to achieve an equivalent antimicrobial effect.
(6) Filipin-induced lesions in glutaraldehyde-fixed parasites indicated higher levels of beta-hydroxysterols in the amastigote than in the promastigote plasma membrane, and in the promastigote flagellar membrane than in the body membrane.
(7) The propionyl-CoA condensing enzyme which catalyzes the first step in the biosynthesis of 2-methylbutyrate and 2-methylvalerate by Ascaris muscle appears to exist in at least three forms in the mitochondria of this parasitic nematode.
(8) The time to recovery of full consciousness, time to parasite clearance, and mortality were examined with Cox proportional-hazards regression analysis.
(9) In addition, a redistribution of cellular controls of the host reaction to parasites may act as a complementary mechanism for establishment of the viable equilibrium between host and parasite.
(10) symptoms, bowel habits, normal physical examination, absence of intestinal infections or parasites) b) physiopathological evaluation (hyperactivity of the distal colon, hypersensitivity to stimuli, stress), and c) physiological evaluation of the patient.
(11) Parasite antigen was present in sera from all infected animals before treatment.
(12) We have found intrathrombocytic parasites of Plasmodium vivax (in 10% of men naturally infected) and P berghei (in 53% of mice experimentally infected); these were both merozoites and trophozoites.
(13) they are shown to inhibit in vitro the release of iron from acidified host cell cytosol, consisting mostly of hemoglobin, a process that could provide this trace element to the parasite.
(14) Phagocytosis of normal or parasitized red cells was not observed.
(15) A radical rearrangement of the organism occurred gradually: initially oval in shape, the parasite became round, then elongated, flattened, and underwent cytokinesis.
(16) The parasites were highly aggregated within the study community, with most people harbouring low burdens while a few individuals harboured very heavy burdens.
(17) Discovery of this vectorhost-parasite system in the Americas, and the localization of promastigote flagellates (leptomonads) in the hindgut of the vector, should assist in clarifying interpretative problems associated with infection of wild-caught flies in studies on leishmaniasis in the Americas and elsewhere.
(18) At the external wall of the host's gut, parasitic cysts of this nematode with immature stages inside were also observed.
(19) All three parasite lines required sialic acid for optimal invasion, but Thai-2 parasites cultured in Tn erythrocytes invaded neuraminidase-treated erythrocytes with 45% efficiency whereas Camp parasites invaded neuraminidase-treated erythrocytes with less than 10% efficiency.
(20) Pretreatment of G6PD(+) cells with ascorbate caused a slight enhancement in parasite development, while in G6PD(-) cells a suppressive effect on the plasmodia was demonstrated.