(n.) A vascular pigmented membrane projecting into the vitreous humor within the globe of the eye in birds, and in many reptiles and fishes; -- also called marsupium.
(n.) The pubic bone.
(n.) Any species of bivalve mollusks of the genus Pecten, and numerous allied genera (family Pectinidae); a scallop. See Scallop.
(n.) The comb of a scorpion. See Comb, 4 (b).
Example Sentences:
(1) Amino acid analyses have been made of the insoluble protein, soluble peptide, and free amino acid fractions isolated from a series of fossil pecten shells of ages from the Pleistocene through the Jurassic.
(2) By using these proteins from the scallop, Pecten maximus, the existence of two distinct tryptophan-containing domains was established, which respond independently to ATP and Ca2+-specific binding.
(3) We investigated the temperature dependence of several functions of octopine dehydrogenase, a monomeric enzyme extracted from the shell fish Pecten maximus L. We found that six enzymatic functions are temperature independent or change only negligibly with temperatue.
(4) Similar localization and ultrastructure of avian pecten oculi and lacertilian conus papillaris suggest homology of these structures.
(5) There were no staining differences between the capillaries of the different regions of the pecten.
(6) The morphology of the pecten of the red-tailed hawk is indicative of a heavy involvement in the transport of materials to the avascular avian retina.
(7) The pecten melanophores of both breeds were dendritic with melanosomes that were larger and fewer in numbers than those pigment cells of the iris and choroid.
(8) The pecten was treated with elastase before incubation in the medium for alkaline phosphatase.
(9) It is considered to be homologous to the pecten oculi of the avian eye; to the falciform process of the teleost eye; to the supraretinal vessels of amphibians and to the intraretinal vessels of the mammalian eye.
(10) Intracellular recordings were obtained from single visual cells of the scallop, Pecten irradians.
(11) Scallops, Pecten maximus, accumulate cadmium naturally in the digestive gland to a level of approximately 100 ppm wet weight.
(12) We suggest that the avian pecten represents a highly amenable structure for studies involving the response(s) by damaged retinae to neural implants.
(13) The peripectinate cells, located on the pecten, are already present at stage 27.
(14) The effect of elastase on alkaline phosphatase activity in the chick pecten capillaries was studied electron histochemically.
(15) The basal lamina like membrane below the endothelial cell of the pecten capillary was digested by collagenases I, II and IV and elastase, and may be a false basal lamina.
(16) The effects of different external ionic conditions and of metabolic inhibitors on the membrane potential of hyperpolarizing photoreceptors in the retina of the scallop Pecten irradians were examined in the presence and absence of light.2.
(17) Fibrils between the basal lamina like membrane of the pecten capillary endothelium and the basal lamina of the cells with pigment granules were digested by collagenases I, II and IV, and elastase.
(18) Doublet microtubules were prepared from sea-urchin (Echinus esculentus and Stronglyocentrotus droebachiensis) and scallop (Pecten maximus) sperm by dialysing flagellar axonemes against 2 mM Tris-0-2 mM EDTA-0-5 mM DTT.
(19) These melanocytes are also felt to be fulfilling a structural role within the pecten.
(20) It has been suggested that the pecten may have a mechanical significance, namely protection of the retina from the excessive movements of the vitreous humour.
Scallop
Definition:
(n.) Any one of numerous species of marine bivalve mollusks of the genus Pecten and allied genera of the family Pectinidae. The shell is usually radially ribbed, and the edge is therefore often undulated in a characteristic manner. The large adductor muscle of some the species is much used as food. One species (Vola Jacobaeus) occurs on the coast of Palestine, and its shell was formerly worn by pilgrims as a mark that they had been to the Holy Land. Called also fan shell. See Pecten, 2.
(n.) One of series of segments of circles joined at their extremities, forming a border like the edge or surface of a scallop shell.
(n.) One of the shells of a scallop; also, a dish resembling a scallop shell.
(v. t.) To mark or cut the edge or border of into segments of circles, like the edge or surface of a scallop shell. See Scallop, n., 2.
(n.) To bake in scallop shells or dishes; to prepare with crumbs of bread or cracker, and bake. See Scalloped oysters, below.
Example Sentences:
(1) Ultrastructural examination of noncartilaginous regions of the tumor demonstrated mesenchymal cells with features suggestive of cartilaginous differentiation, viz, scalloped cell membranes, sac-like distension of abundant rough endoplasmic reticulum, and a matrix containing fibrillary and finely granular material.
(2) Hypertrophy of the satellite cells with increase in the perineuronal intercellular spaces, often associated with irregular, scalloped nuclear and cell outlines, suggested that neuron shrinkage had occurred.
(3) The ultrasonic root planing however showed a more discrete scalloped surface with very small tears and having a hammered appearance.
(4) I choose the halibut fillet with scallops, dauphinoise potatoes, veg melange and pesto tapenade.
(5) Composition of neurons, their structure and neuromediatory specialization in the Japanese scallop ganglia have been studied by means of morphological, morphometrical and histochemical methods.
(6) In addition, the cells receive synapses from numerous nonimmunoreactive terminals including a wide range of different dome-shaped terminals and various scalloped or glomerular terminals.
(7) By using these proteins from the scallop, Pecten maximus, the existence of two distinct tryptophan-containing domains was established, which respond independently to ATP and Ca2+-specific binding.
(8) Two classes of myosin light chains can be distinguished functionally: those that restore calcium regulation to "desensitized" scallop myofibrils, and those that do not (Kendrick-Jones, J., et al.
(9) Labeled axon terminals were both scallop-shaped and smooth in profile.
(10) An additional previously unreported finding was a 'scalloped' contour in a majority of hairs.
(11) 98, 141-148 (1985) was prepared by chymotryptic digestion of the scallop myosin in the presence of EDTA, and was assigned as the carboxyl-terminal 106-residue peptide of the SHLC.
(12) In vitro production of hydrogen peroxide (H2O2) by the amoebocytes of the scallop, Patinopecten yessoensis, was studied.
(13) Myosin filaments isolated from scallop striated muscle have been activated by calcium-containing solutions, and their structure has been examined by electron microscopy after negative staining.
(14) Mussels and scallops were very rapidly contaminated showing high toxin accumulation rates, whereas rates for oysters and clams were low.
(15) Native myosin filaments from scallop striated muscle that have been rapidly frozen in relaxing solutions appear to be well preserved in vitreous ice.
(16) Immunolabeling is in small dome-shaped and in large scalloped synaptic terminals.
(17) The important aggressive X-ray signs of central (primary) chondrosarcoma include: Infiltrating, notching and scalloping of the endosteal cortical surface; irregular and ill-defined margin between tumor and bone, transition zone widened or 'moth-eaten' in appearance; soft tissue tumor mass may grow eccentrically or concentrically around the bone; various patterns of calcification within the tumor and localized laminated periosteal reaction.
(18) At one point, dissatisfied with their taste – she is an enthusiastic rather than a merely dutiful taster – she tipped seven plated servings of scallops back in a basin and began seasoning them all over again.
(19) In the myosin-linked regulatory mechanism typified by the molluscan scallop adductor muscle, contraction is controlled by Ca2+ binding to sites on the thick filament protein, myosin.
(20) The hybrid complexes reconstituted with molluscan E-LC and R-LC regained the specific Ca2(+)-binding site, whereas the hybrid complex formed with rabbit skeletal E-LC [alkali LC 2 (A2-LC)] and scallop R-LC did not.