(n. pl.) The lowest of the grand divisions of the animal kingdom.
(pl. ) of Protozoon
Example Sentences:
(1) Many protozoa were in renal tubule cells, endothelial cells and brain.
(2) The 8-, 9-, 10-, and 11-thiastearic acids were found to suppress the synthesis of the cyclopropane-containing fatty acid dihydrosterculic acid (9,10-methyleneoctadecanoic acid) at micromolar concentrations in the growth medium, and all but the 9-thiastearate were found to inhibit the growth of the protozoa at concentrations.
(3) On defaunation of the rumen to remove ciliated protozoa the concentration of phosphatidylcholine in ruminal digesta falls markedly and becomes lower than that in abomasal digesta.
(4) Protozoa were found in 32% of samples (4.6% pathogenic protozoa, 24% facultative pathogenic protozoa and 3.4% apathogenic protozoa).
(5) Omasal contents were collected from slaughtered cattle (n = 54), bison (n = 15), and sheep (n = 40) to determine numbers and generic distribution of ciliated protozoa.
(6) In an attempt to reconstruct the universal ancestor of all present-day tubulin genes the intron positions in 38 different alpha- and beta-tubulin genes from plants, animals, fungi and protozoa were compared.
(7) The drug possesses a strong activity against numerous fungi, some protozoa, and bacteria.
(8) Low GC in Mycoplasma is accompanied by use of UGA for tryptophan and, in ciliated protozoa, by use of UAA and UAG for glutamine.
(9) In addition, a number of antiparasitic agents have been shown to exert their actions through a free radical metabolism: nitro compounds used against trypanosomatids, anaerobic protozoa and helminths; crystal violet used in blood banks to prevent blood transmission of Chagas' disease; the antimalarial primaquine, chloroquinine, and quinhasou; and quinones active in vitro and in vivo against different parasites.
(10) Optimal doses of promastigotes were used which ensured the adaptation of Protozoa in the host's intestine.
(11) In this case the fraction responsible for this transformation contains mainly protozoa.
(12) The apparent production rate of the larger protozoa indicates that they contribute only about 9% of the predicted net microbial protein synthesis in the rumen.
(13) The observation, in parasitic protozoa and helminths, that selfing or non-obligatory mating is a common feature suggests that these processes may be strategies to overcome the cost of meiosis.
(14) Nitroimidazoles have been prepared which show interesting activity against the bacterium, Neisseria gonorrhoeae, in addition to the activities usually shown by nitroimidazoles against protozoa and anaerobic bacteria.
(15) Antigenic macromolecules and some viruses, bacteria, and protozoa enter their apical surface by endocytosis or phagocytosis.
(16) Trapping of many types of small protozoa and manipulation of organelles within protozoa is also possible.
(17) These associations are also compared with other, previously described cases of symbiosis involving prokaryotes and protozoa.
(18) Although C. ventriculi is classified as a holotrich, concentrations of this species in the rumen appear to follow a diurnal cycle more closely related to be entodiniomorph protozoa.
(19) In a later phase, the protozoa treated with histamine or prednisolone died.
(20) The stool samples were examined for the presence of Cryptosporidium sp., other protozoa, helminths, and pathogenic enterobacteria.
Radiolarian
Definition:
(a.) Of or pertaining to the Radiolaria.
(n.) One of the Radiolaria.
Example Sentences:
(1) There are various types of photoproteins: the photoproteins of coelenterates, ctenophores and radiolarians require Ca2+ to trigger their luminescence; the photoproteins of the bivalve Pholas and of the scale worm appear to involve superoxide radicals and O2 in their light-emitting reactions; the photoprotein of euphausiid shrimps emits light only in the presence of a special fluorescent compound; the photoprotein of the millipede Luminodesmus, the only known example of terrestrial origin, requires ATP and Mg2+ to emit light.
(2) However, colonies maintained in the dark have a decline in number of zooxanthellae and light microscopic examination shows they are being drawn into the ectoplasm of the radiolarian cells.
(3) Collozoum inerme (Müller) is a colonial Radiolarian containing numerous cells bound in a common gelatinous matrix.
(4) T. nucleata is a skeletonless, single-celled radiolarian commonly found in ocean surface water.
(5) The presence of aluminium (A1) in the nuclei of thyroid cells (Rabbits), liver and skin cells (Frogs) and in the nucleolus of a Radiolarian is described.