(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.
Pectinate
Definition:
(a.) Alt. of Pectinated
Example Sentences:
(1) Thirty-two strains of pectin-fermenting rumen bacteria were isolated from bovine rumen contents in a rumen fluid medium which contained pectin as the only added energy source.
(2) The different hydrolytic, fermentative and methanogenic activities of these populations ensure the efficient degradation of cell wall constituent in forages (cellulose, hemicellulose, pectin) ingested by ruminants.
(3) These cocultures can be considered as metabolic associations, where the Bacillus produces degradation and fermentation products of pectin, which can be used by Azospirillum species.
(4) On the other hand, wheat bran, pectin, guar gum, and degraded carageenan all stimulate large bowel cell proliferation, the greatest growth response tending to occur in the cecum or proximal colon.
(5) An in vitro experiment was conduced under bacteriologically controlled conditions to examine the effect of light on the production of pectin methyl esterase (PME) and pectin polygalacturonase (PG) in the root exudates of Trifolium alexandrinum inoculated with an efficient strain of Rhizobium trifolii.
(6) Following eight years of employment during which he added pectin to a recipe for Christmas candies, the candymaker developed acute respiratory symptoms.
(7) Amiloride and verapamil inhibit pectin-induced differentiation and also reduce the onset of the Na+ and Ca2+ flux.
(8) This study compared the dietary fiber (DF), neutral detergent fiber (NDF), cellulose, hemicellulose, lignin, and pectin content of selected fruits and vegetables.
(9) We suggest that the pollen expression of LAT56 and LAT59 might relate to a requirement for pectin degradation during pollen tube growth.
(10) The pectin supplement reduced protein concentration in jejunal contents while cellulose reduced protein concentration in the ileal and caecal contents.
(11) A pectin pectylhydrolase (pectinesterase) (EC 3.1.1.11) was also present in the clarified cultures.
(12) A similar meal in which guar was added to the bread and pectin to the marmalade resulted in significant reductions of blood glucose at 15 min (P less than 0.002) and 30 min (P less than 0.01).
(13) These tumors always develop at the pectinate line and transitional mucosa, while rectal localizations corresponds to contiguous extension from a melanoma of the anal canal.
(14) The nerves distribute to structures at either side of the loop: superolaterally to pectinate muscle and inferomedially to the region of the AV node.
(15) Pectin was consumed with fruit and sugar as a gel in divided doses with meals.
(16) Fecal bacterial flora was modified by pectin; anaerobic bacteria increased and aerobic bacteria increased.
(17) We compared the effectiveness of 1 mM Geritol, 12% corn oil emulsion, Kaolin-pectin, single contrast oral barium sulfate, and effervescent granules as enteric magnetic resonance imaging (MRI) contrast agents.
(18) The pectin effect on gastric emptying may be caused solely by increasing the viscosity of the meals.
(19) The kind of inhibition on kiwi pectin methylesterase was found to be competitive with an apparent Ki of 0.22 microM, using citrus pectin as a substrate.
(20) However, 15% pectin diet could neither inhibit colonic carcinogenesis nor increase the fecal weight.