(1) A significant proportion of the soluble protein of the organic matrix of mollusk shells is composed of a repeating sequence of aspartic acid separated by either glycine or serine.
(2) Low concentrations of cercaricides are toxic both for cercariae and parthenites from the liver of mollusks and for freely swimming cercariae.
(3) The neuroendocrine bag cell neurons of the marine mollusk Aplysia produce prolonged inhibition that lasts for more than 2 hr.
(4) Changes in the membrane properties of the oocyte of the mollusk, Patella vulgata, were analyzed following the induction of meiosis reinitiation by paleopedial ganglia extract or by the weak base ammonia.
(5) Fossil glycoproteins of the soluble organic matrix are present in an 80-million-year-old mollusk shell from the Late Cretaceous Period.
(6) 12-Hydroperoxy-5,8,10,14-eicosatetraenoic acid (12-HPETE), a lipoxygenase product, simulates the synaptic responses produced by the modulatory transmitter, histamine, and the neuroactive peptide, Phe-Met-Arg-Phe-amide (FMRFamide), in identified neurons of the marine mollusk, Aplysia californica (Piomelli, D., Shapiro, E., Feinmark, S. J., and Schwartz, J. H. (1987) J. Neurosci.
(7) A number of observations, as listed below, suggested a cholinergic basis for inhibitory interactions between photoreceptors of the eye in the nudibranch mollusk Hermissenda crassicornis.
(8) Some vital functions of mollusks (nutrition, oviposition, and support substratum) are closely related to vegetation.
(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) We tested this idea using the simple nervous system of the marine mollusk, Aplysia californica.
(11) Attempts to introduce infectious or foreign material into oysters and other bivalve mollusks usually involve force or trauma because of immediate, prolonged adduction of the tightly closing valves.
(12) Chromatin organization in the sperm of the bivalve mollusks results from the interaction between a discrete number of protamine-like proteins (PL) and DNA.
(13) Psilotrema simillimum has one intermediate host, the mollusk Bithynia leachi.
(14) Appropriate preparation of food, control of mollusks and planarians, and elimination of rodents are important measures in limiting the further spread of eosinophilic meningitis caused by A. cantonensis.
(15) were found in the land mollusks Bradybaena duplocincta and Jaminia potaniniana asiatica collected on the slopes of Tien-Shan.
(16) Diagnosis of neoplasia in the living mollusk was achieved rapidly and accurately by cytologic examination of circulating blood.
(17) The small hydrotechnique objects, such as irrigation and drainage systems, fish cultivating ponds, isolate and cascade artificial water reservoirs, channels considerably change the ecological conditions of mollusks of the genus Codiella, the first intermediate host of Opisthorchis felineus.
(18) The control measures consisted of the prohibition of the harvest and sale of all bivalve mollusks as well as a public warning to avoid the consumption of such shellfish.
(19) It is expedient to use mollusks, both for testing of N-nitroso compounds and as a biologic indicator of hydrospheric pollution.
(20) Octopamine may have functions of its own in the central nervous system of mollusks.
Slug
Definition:
(n.) A drone; a slow, lazy fellow; a sluggard.
(n.) A hindrance; an obstruction.
(n.) Any one of numerous species of terrestrial pulmonate mollusks belonging to Limax and several related genera, in which the shell is either small and concealed in the mantle, or altogether wanting. They are closely allied to the land snails.
(n.) Any smooth, soft larva of a sawfly or moth which creeps like a mollusk; as, the pear slug; rose slug.
(n.) A ship that sails slowly.
(n.) An irregularly shaped piece of metal, used as a missile for a gun.
(n.) A thick strip of metal less than type high, and as long as the width of a column or a page, -- used in spacing out pages and to separate display lines, etc.
(v. i.) To move slowly; to lie idle.
(v. t.) To make sluggish.
(v. t.) To load with a slug or slugs; as, to slug a gun.
(v. t.) To strike heavily.
(v. i.) To become reduced in diameter, or changed in shape, by passing from a larger to a smaller part of the bore of the barrel; -- said of a bullet when fired from a gun, pistol, or other firearm.
Example Sentences:
(1) The appearance of the corpus allatum, the central endocrine gland of diapause, was examined histologically in the slug moth prepupae, Monema flavescens (Lepidoptera).
(2) It was found that: the two cell types have the same basal adenylate cyclase activity; prespore cells and prestalk cells are able to relay the extracellular cAMP signal equally well; intact prestalk cells show a threefold higher cAMP phosphodiesterase activity on the cell surface than prespore cells, whereas their cytosolic activity is the same; intact prestalk cells bind three to four times more cAMP than prespore cells; no large differences in cAMP metabolism and detection were observed between cells derived from migrating slugs and culminating aggregates.
(3) We propose a model whereby a protein repressor, under the control of PKA, inhibits precocious induction of stalk cell differentiation by DIF and so regulates the choice between slug migration and culmination.
(4) The circadian locomotor rhythm of the terrestrial slug, Limax maximus, was measured with activity wheels during exposure to both humid and drying conditions.
(5) The Dictyostelium slug contains a simple anterior-posterior pattern of prestalk and prespore cells.
(6) "The truth is that no Chagossian has anything like equal rights with even the warty sea slug.
(7) Analysis by high-pressure liquid chromatography (HPLC) using different solvent systems shows that the major species of DIF activity extracted from slugs coelutes with DIF-1, the major species of released DIF and is similarly sensitive to sodium borohydride reduction.
(8) We also show that expression of the ecmA gene becomes uniformly high throughout the prestalk zone when slugs are allowed to migrate in the light.
(9) Beejin is distributed in the posterior region of slugs.
(10) A section of the mantle edge enlarged to produce a posterior mantle lobe upon which sit both the shell and viscera, and which later became redundant as posterior elongation of the head-foot produced a slug-like form, the viscera being incorporated within the head-foot.
(11) The errors are greatest when hydrogen is given by intra-arterial slug injection, and when the electrode is within 2mm of another tissue compartment, CSF, or air.
(12) Giant mucin granules of the slug (Ariolimax columbianus) are released intact from mucus-secreting cells of the slug's skin.
(13) A good slug of booze (brandy or calvados) makes for a very adult crumble.
(14) A small number of prestalk cells become redistributed in the posterior during slug migration and appear to undergo respecification when their position is changed.
(15) Prespore and prestalk cells from slugs were enriched on Percoll density gradients and allowed to regulate in suspension culture under 100% oxygen.
(16) In this paper we develop and analyze a class of mathematical models of the slug in which cell determination can be less rigidly tied to spatial location, and which involve chemotactic cell sorting to re-establish and maintain the spatial pattern of cell types.
(17) Recent experimental work suggests that under normal conditions cell sorting plays an important part in maintaining and re-establishing the axial pattern of cell types in the slug stage of the cellular slime mold Dictyostelium discoideum.
(18) When DIF-1 is added to intact slugs, it causes a substantial enlargement of the prestalk tissue at physiological concentrations in the time previously shown to be required for pattern regulation.
(19) X marks the spot where sea slug A gently inserts its penile stylet into sea slug B's forehead.
(20) We demonstrate that adenosine affects the immunological prespore specific staining pattern in slugs in a manner opposite to cAMP:cAMP induces an increase of prespore antigen; adenosine induces a decrease.