(a.) Having elevations or depressions in form like one half of a bivalve shell; -- applied principally to a surface produced by fracture.
Example Sentences:
(1) Those differences can be summarized as follows: (1) the occurrence of pronounced, highly curved hackle marks, which could in many instances be mistaken for conchoidal marks;(2)the appearance of the beveled edges bordering the cratering on the side opposite origin of force; and (3) a more apparent tendency toward an inverse relationship of muzzle velocity and energy to radial fracture length and degree of curving along crater boundaries.
(2) These figures were assumed to be the very early stage of formation of conchoidal bodies at the LM level, so-called Schaumann bodies.
(3) Their similitude with other reported intracellular calcareous bodies occurring in malakoplakia, infectious orchitis (Michaelis-Guttman' bodies or calcosphaerites), in beryllium granulomas (conchoid bodies) and sarcoidosis (Schaumann bodies) is discussed.
(4) Sclerotic granulomas with giant cells, conchoidal bodies, iron deposition in the pulmonary stroma--all these lung alterations allowed one to establish a diagnosis of lung berylliosis.
(5) Several patterns of calcification were noted including bubbly, plate-like, elongate, and conchoidal forms.
(6) Lung biopsies in the index cases revealed an interstitial infiltration of inflammatory cells and aggregates of conchoid bodies surrounded by multinucleated giant cells.
Mussel
Definition:
(n.) Any one of many species of marine bivalve shells of the genus Mytilus, and related genera, of the family Mytidae. The common mussel (Mytilus edulis; see Illust. under Byssus), and the larger, or horse, mussel (Modiola modiolus), inhabiting the shores both of Europe and America, are edible. The former is extensively used as food in Europe.
(n.) Any one of numerous species of Unio, and related fresh-water genera; -- called also river mussel. See Naiad, and Unio.
Example Sentences:
(1) Conservationists have warned that they can affect fish growth and persist in the guts of mussels and fish that mistake them for food.
(2) In the mantle of the female sea mussel Mytilus galloprovincialis seasonal variations in the adenylate cyclase activity correlate with gonadal development.
(3) Brush border membrane vesicles were prepared from mussel gills using differential and sucrose density gradient centrifugation.
(4) Average wet-weight concentrations of sigmaDDT and PCBs in mussels from the four areas sampled were: Istrian coast, 65 and 76 ppb; Rijeka Bay, 58 and 75 ppb; Zadar, 36 and 128 ppb; Losinj Island, 167 and 133 ppb.
(5) To investigate the role of neurohumoral factors in acclimation of mussel muscle to a lowered salinity, studies have been made on the reaction of the intact mussel muscle and that of isolated muscle to change in the salinity from 26% to 10%.
(6) Mussels and oysters contaminated by the dinoflagellate showed similar toxins, but contained larger proportions of C3 (40-57 mole%) and more potent carbamate toxins (7-23 mole% total).
(7) Uptake from ambient water and the depuration of five chlorinated phenolics, two chloroguaiacols (3,4,5-tri- and tetrachloroguaiacol), and three chlorophenols (2,4,6-tri-, 2,3,4,6-tetra-, and pentachlorophenol) were studied in the duck mussel (Anodonta anatina).
(8) The exposure of the cells from mussel haemolymph and from mouse L1210 to a genotoxic compound such as dimethylsulfate results in DNA damage and consequently in a reduction of the unwinding time.
(9) Using this system, we now report the characterization of the biochemical and toxicological action of a toxic mussels extract, containing the excitatory amino acid domoic acid.
(10) Furthermore the micronuclei (MN) frequencies in wild mussels from four different field locations have been determined.
(11) Pseudomonas aeruginosa and its corresponding bacteriophages were sought in oysters and mussels throughout 1973.
(12) The UPTC and NASC strains included six from river water, two from mussels and four from sea water.
(13) Lateral cilia of freshwater mussel gills, which normally beat with metachronal rhythm, are arrested pointing frontally by perfusion with 6.25 to 12.5 millimolar calcium and 10(-5) molar A23187, a calcium ionophore.
(14) Moreover, the close similarity between this neurotoxic syndrome in experimental animals and the clinical picture witnessed in Canadian victims of mussel poisoning lends further credence to the assumption that this poisoning incident was caused by an interaction between the domoate molecule and kainate receptors in the human central nervous system.
(15) Sections for morphological examination showed evidence of increased digestive cell deletion in phenanthrene-treated mussels.
(16) Mussels and scallops were very rapidly contaminated showing high toxin accumulation rates, whereas rates for oysters and clams were low.
(17) In the shores where the detergents have not been used, the mussels have progressively excreted the hydrocarbons accumulated in their organism ; the other fixed animals have not been changed.
(18) Mussels were sampled from two sites in the Gulf of Trieste.
(19) These levels correspond to levels of 24 and 94 ppm in mussels.
(20) 1.1.1.44) activities measured in tissue extracts from sea mussel exhibit a potential unbalance which could cause an accumulation of 6-phosphogluconate.