(n.) Any one of numerous species of terrestrial air-breathing gastropods belonging to the genus Helix and many allied genera of the family Helicidae. They are abundant in nearly all parts of the world except the arctic regions, and feed almost entirely on vegetation; a land snail.
(n.) Any gastropod having a general resemblance to the true snails, including fresh-water and marine species. See Pond snail, under Pond, and Sea snail.
(n.) Hence, a drone; a slow-moving person or thing.
(n.) A spiral cam, or a flat piece of metal of spirally curved outline, used for giving motion to, or changing the position of, another part, as the hammer tail of a striking clock.
(n.) A tortoise; in ancient warfare, a movable roof or shed to protect besiegers; a testudo.
(n.) The pod of the sanil clover.
Example Sentences:
(1) The snail host was a tetraploid form of Bulinus (n = 36).
(2) 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.
(3) omega-Conotoxin GVIA is a peptide purified from the venom of the marine snail, Conus geographus, that specifically blocks voltage-sensitive calcium channels in neurons.
(4) Measurable quantities of temefos were found in the snails within 1 day after the first treatment with a 2% granular formulation but 3 weeks elapsed before uptake occurred following treatment with a temefos emulsion.
(5) In the presence of ATP-Mg2+, the enzymes were rapidly phosphorylated in vitro by the catalytic subunit of cyclic AMP (cAMP)-dependent protein kinase purified from snail muscle and also by the C subunit of protein kinase from bovine heart.
(6) A wide but discontinuous distribution of the snail on the north coast of Haiti is confirmed (no autochthonous infections with S. mansoni have been reported).
(7) 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.
(8) These data confirm that both eggs and miracidia secrete proteinases which are capable of degrading at least the glycoprotein components of extracellular matrix to facilitate their migration through intestinal wall or penetration of snail tissue.
(9) When used in snail neurones such electrodes gave very similar pHi values to those recorded simultaneously by recessed-tip glass micro-electrodes.
(10) The whole body withdrawal reaction of freshwater snail Planorbarius corneus consists of two phases.
(11) An explanation of this in terms of terrestrial snail (intermediate host) populations and a suggestion for the possible use of these data in developing a predictive model for forecasting lungworm levels for use in in bighorn sheep management are given.
(12) Aridanin and bayluscide produced significant reductions in the glycogen content of B. glabrata, but a significant decrease in the protein content of the snails was not apparent until after 4 weeks of continuous exposure.
(13) The rarer of the two ChE phenotypes in the uninfected sample (29.4%) was present in 100% of the 17 infected snails examined.
(14) Using Ca-sensitive fluorescent probe (fura-2) Sr and Ba absorption by intracellular organelles after cell loading by these cations and their effect on Ca release from intracellular stores were studied on isolated snail neurons.
(15) Schistosomin is produced in the central nervous system of the snail and released upon parasitic infection.
(16) In the present study, buccal ganglion neurons 5 were examined following exposure of animals to conditions that induce estivation, a behavioral state exhibited by these freshwater snails in nature.
(17) The effects of gamma-globulins to brain specific nonhistone chromatin proteins (BSNCP-3.5;-3.6) on conditioned food avoidance behaviour (carrot or apple) was studied in the garden snail.
(18) Tilts of the freshwater snail Planorbarius corneus, resulting in statocyst receptor stimulation, induced the defensive reaction including pulling down of the shell, shortening of the foot, inhibition of locomotion and feeding.
(19) Several biological and physical factors which may influence infection of Biomphalaria glabrata snails with the first stage larvae of Angiostrongylus cantonensis were studied.
(20) In both juvenile and adult pond snails, LS1+ (LS1 positive) hemocytes have the morphology of immature cells.
Tortoise
Definition:
(n.) Any one of numerous species of reptiles of the order Testudinata.
(n.) Same as Testudo, 2.
(n.) having a color like that of a tortoise's shell, black with white and orange spots; -- used mostly to describe cats of that color.
(n.) a tortoise-shell cat.
Example Sentences:
(1) Water snakes (Natrix natrix), rat snakes (Ptyas korros), cobras (Naja naja), pythons (Python molurus), tortoises (Kachuga sp.
(2) Fingerprint analysis and S1 nuclease mapping analysis also showed that sequence boundaries of tortoise repetitive units exactly corresponded to RNA species.
(3) Such changes of EEG and behaviour were not found in tortoises that committed errors at first presentations of the task and only gradually learned correct solving.
(4) The phase of quick tension recovery was found to take place more rapidly in frog than in tortoise fibres: it was completed in approximately 30 msec (after stretch) and in approximately 20 msec (after release) in frog fibres (3 degrees C).
(5) However, monoamine storage organelles have not been found in tortoise thrombocytes.
(6) Both groups of goats were infested with small numbers of immature stages of the tortoise tick, Amblyomma marmoreum, and the yellow dog tick, Haemaphysalis leachi.
(7) A theory to explain its underlying physiology is presented, based on studies of the seasonal and cyclic variations in the tortoises' blood composition.
(8) It has been demonstrated that in the tortoise after hatching the round nucleus and its neurons are rather small, neuronal density is high.
(9) Judi Dench and Dustin Hoffman star as neighbours Mrs Silver and Mr Hoppy, who are brought together when Hoppy whispers a magic growth spell to Silver’s pet tortoise, then attempts to bring the incantation’s power to fruition.
(10) The fatty acid composition of sphingomyelin (Spm) was studied in the total brain, the forebrain and the brain stem in frogs (Rana temporaria and Rana ridibunda), the tortoise (Emys orbicularis), the hen and the cat.
(11) Measurements have been made of heat production and changes in levels of phosphorylcreatine (PC), ATP and lactic acid resulting from contraction of tortoise muscle under anaerobic conditions.2.
(12) Pasteurella testudinis was cultured from the nasal cavity of all ill tortoises and one of four control tortoises.
(13) The development of the intramural plexuses in the tortoise, Geoclemys reevesii was inferior to that observed in the fowl: the meshes of both Auerbach's and Meissner's plexuses were coarser, and consisted of less number of nerve fibers.
(14) Most of the superficial fibres in both tortoise and terrapin muscles were multiply innervated, but end-plates were focal rather than diffuse.6.
(15) The amplitude of the delayed rectification current, when expressed either as normalized to the calculated membrane capacity or to the initial background current, is significantly larger in the frog than in the tortoise.
(16) Appearance of transversal and circular anastomoses between the afferent and efferent arterioles of the glomeruli, as well as transformation of their capillaries into nutritional capillaries in the tortoise kidneys under the alimentary dehydration ensures realization of the periglomerular and aglomerular renal arterial blood circulation.
(17) Periods of breath-holding are interrupted by episodes of continuous breathing in the aquatic turtle Pelomedusa subrufa, whereas single breaths and short periods of breath-holding alternate in the terrestrial tortoise Testudo pardalis.
(18) The primary and secondary immune responses to sheep erythrocytes (SRBC) have been characterized in the tortoise Mauremys caspica in terms of circulating antibodies and PFC response in two different seasons: summer and autumn.
(19) The tortoises did not develop fever in response to any of the pyrogens we tested.
(20) The report that Sendai virus was implicated in the genesis of rhinitis in tortoises could not be substantiated.