What's the difference between mollusk and siphuncle?

Mollusk

Definition:

(n.) One of the Mollusca.

Example Sentences:

(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.