(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.
Squid
Definition:
(n.) Any one of numerous species of ten-armed cephalopods having a long, tapered body, and a caudal fin on each side; especially, any species of Loligo, Ommastrephes, and related genera. See Calamary, Decacerata, Dibranchiata.
(n.) A fishhook with a piece of bright lead, bone, or other substance, fastened on its shank to imitate a squid.
Example Sentences:
(1) One of the most recent was in June last year, when a boatload of anglers came across a dead 23ft squid off Port Salerno on the state's Atlantic coast.
(2) To order your main course (from £7.50), squeeze through the tightly packed tables to the kitchen and select whatever catches your eye from an array of dishes that includes roast lamb, salmon with seafood risotto, stuffed cabbage, and sublime stuffed squid (£14), which comes with tomato rice studded with succulent octopus.
(3) Video-enhanced contrast light microscopy was used to directly observe dynamic length changes in native, MAP-containing microtubules from squid axoplasm.
(4) Lens crystallins were isolated from cephalopods, octopus and squid.
(5) Anion conductances of giant axons of squid, Sepioteuthis, were measured.
(6) A novel nonapeptide, sequence YAIVARPRFamide, was isolated from brain extracts of the squid, L. vulgaris.
(7) n-Aequorin J, a luminescent protein which responds to calcium concentration changes in the order of several hundred micromoles, was injected into the preterminal fiber in the squid giant synapse.
(8) The transmembrane potential of voltage-clamped squid giant axon is increased to compensate for a reduction in the rate of potassium channel kinetics when artificial seawater with trivalent erbium ion is substituted for artificial seawater.
(9) During both of them the magnetic field pattern, determined with a 7- or 24-channel SQUID magnetometer, suggested a dipolar current source.
(10) When a bright light flash is absorbed by a small region in the outer segments of squid photoreceptors fixed in glutaraldehyde, a brief pulse of membrane current flows locally.
(11) (6) It is concluded that in the squid axon the effects on inactivation are not the main reason for the reduction of the sodium current by benzocaine and that, in common with many other neutral anaesthetics, there are at least two sites at which benzocaine acts.
(12) Evoked release of transmitter at the squid giant synapse was examined under conditions where the calcium ion concentration in the presynaptic terminal was manipulated by inhibitors of calcium sequestration.
(13) We have recorded spontaneous magnetoencephalographic (MEG) activity during overnight natural sleep in 4 healthy adults with a 24-channel SQUID gradiometer, mainly over the sides of the head.
(14) Jeletzkya douglassae Johnson and Richardson is described as the oldest known representative of an extant squid group.
(15) The myosin-linked regulatory system rather than the thin-filament-linked regulatory system was predominant in squid myosin B. Squid myosin B required higher Ca2+ and Sr2+ concentrations for Mg-ATPase activity; half-maximal activation of Mg-ATPase was obtained at 0.8 micron Ca2+ and 28 micron Sr2+ with skeletal myosin B, and at 2.5 micron Ca2+ and 140 micron Sr2+ with squid myosin B.
(16) To test the hypothesis that inositol trisphosphate (InsP3) mediates adaptation and excitation in invertebrate photoreceptors, we measured its formation on a rapid time scale in squid retinas.
(17) The developments include a DC SQUID with FM read-out, resulting in the most compact SQUID electronics so far, a planar microwave biased RF SQUID with very high slew rate, and efforts to create reliable SQUIDs with sufficient sensitivity for biomagnetic applications that are cooled by liquid nitrogen.
(18) We report here that a transparent tissue, derived from muscle but functioning as a lens in the light-emitting organ of a squid, Euprymna scolopes, shows striking biochemical convergence with the epidermally derived ocular lenses of some mammals and cephalopods.
(19) (3) The two stable states of the nerve membrane, which are readily demonstrable in TEA-treated or internally perfused squid giant axons, are shown to represent bivalent cation-rich and univalent cation-rich states of the nerve membrane.
(20) Previous work has revealed that 4S RNA is the primary species of RNA in the axoplasm from the giant axons of the squid and Myxicola.