(n.) The hard outer covering of hydroids and other marine animals; the perisarc.
Example Sentences:
(1) Immunoreactivity was restricted to the periderm and intermediate layers of fetal epidermis at 55 d of gestation, when the first wave of wool follicles are initiated.
(2) Simple epithelial CK are expressed in all cell layers during the early stages, essentially in peridermal cells.
(3) The ER stained with DiOC6 (3) was prominent in both the periderm and basal cells.
(4) The H antigen showed a variable and weak expression on peridermal cells from day 57 to day 84 estimated gestation age (EGA).
(5) After 140 days, however, keratin appears in the superficial layers of the periderm; the bladder cells degenerate and become 'rosette' cells, and glycogen and alkaline phosphatase begin to disappear.
(6) When a semipermeable membrane is interposed between the cells and the epidermis, the latter does not degenerate, but keratinizes without showing the usual stages of differentiation.The malignant cells sometimes cause hypertrophy of the epidermis when cultured beneath the dermis of intact skin, but have no effect when grown on the peridermal surface of this tissue or of isolated epidermis.Freeze- or heat-killed dermal cells, whether normal or malignant, provide an unsuitable substratum for epidermal survival, possibly due to adsorption of intracellular constituents on to their surfaces.IT IS SUGGESTED THAT THE MALIGNANT FIBROBLASTS EXAMINED PRODUCE AT LEAST TWO SUBSTANCES HAVING AN EFFECT ON EPIDERMIS: one of small molecular size affecting differentiation, and a toxic macromolecule.
(7) Dense bodies are present within mitochondria, nuclei, glycogen pools and the peridermal cytoplasm.
(8) Immunostaining was seen in vivo in all regions of the palatal epithelium with superficial peridermal cells staining most intensely.
(9) In the 18 to 20 day fetuses, no periderm is present.
(10) This study shows that different patterns of scutate scale type beta keratins are accumulated in the three adjacent structures of the embryonic chick beak: periderm, egg tooth, and cornified beak.
(11) The periderm is lost during the first week of postnatal development.
(12) The periderm in these fetal cultures formed blebs early but was sloughed with the stratum corneum in older cultures.
(13) In the epithelial cells both the periderm and basal cells contained these procollagens within the cytoplasmic organelles.
(14) The periderm cell layer had disorderly fusion at the outer canthus, premature flattening, and failure to fuse in the inner canthus.
(15) Type V collagen was also localized in basal and periderm cells of the epidermis.
(16) These proteins were retained in the outer layers of peridermal cells and in some cells of the basal layer (probably Merkel cells).
(17) Acting in concert, growth factors could regulate events critical to formation of the secondary palate, including cessation of medial epithelial cell proliferation, synthesis of extracellular matrix proteins in the mesenchyme, programmed cell death of medial epithelial peridermal cells, and transformation of basal epithelial medial cells to mesenchymal cells.
(18) In the 12-day embryo, the periderm forms a complete layer.
(19) The changes in the periderm observed with the scanning electron microscope have been correlated with and supplemented by cytologic studies with the transmission electron microscope in the periderm and other epidermal layers.
(20) The periderm cells present form a flattened band along the eyelid margin rather than, as in normal eyelids, along the fusion line.
Tissue
Definition:
(n.) A woven fabric.
(n.) A fine transparent silk stuff, used for veils, etc.; specifically, cloth interwoven with gold or silver threads, or embossed with figures.
(n.) One of the elementary materials or fibres, having a uniform structure and a specialized function, of which ordinary animals and plants are composed; a texture; as, epithelial tissue; connective tissue.
(n.) Fig.: Web; texture; complicated fabrication; connected series; as, a tissue of forgeries, or of falsehood.
(v. t.) To form tissue of; to interweave.
Example Sentences:
(1) In conclusion, the efficacy of free tissue transfer in the treatment of osteomyelitis is geared mainly at enabling the surgeon to perform a wide radical debridement of infected and nonviable soft tissue and bone.
(2) If ascorbic acid was omitted from the culture medium, the extensive new connective tissue matrix was not produced.
(3) The interaction of the antibody with both the bacterial and the tissue derived polysialic acids suggests that the conformational epitope critical for the interaction is formed by both classes of compounds.
(4) The Cavitron Ultrasonic Surgical Aspirator (CUSA) is a dissecting system that removes tissue by vibration, irrigation and suction; fluid and particulate matter from tumors are aspirated and subsquently deposited in a canister.
(5) Bilateral symmetric soft-tissue masses posterior to the glandular tissue with accompanying calcifications should suggest the diagnosis.
(6) In cardiac tissue the adenylate system is not a good indicator of the energy state of the mitochondrion, even when the concentrations of AMP and free cytosolic ADP are calculated from the adenylate kinase and creatine kinase equilibria.
(7) Spectrophotometric determination of the sulfhydryl content in the animal tissue before (control) and after using 6,6'-Dithiodinicotinic acid is applied.
(8) Microionophoretically applied excitatory amino acids induced firing of extracellularly recorded single units in a tissue slice preparation of the mouse cochlear nucleus, and the similarly applied antagonist 2-amino-5-phosphonovalerate (2APV) was demonstrated to be a selective N-methyl-D-aspartate (NMDA) receptor antagonist.
(9) The vascular endothelium is capable of regulating tissue perfusion by the release of endothelium-derived relaxing factor to modulate vasomotor tone of the resistance vasculature.
(10) Quantitative determinations indicate that the amount of PBG-D mRNA is modulated both by the erythroid nature of the tissue and by cell proliferation, probably at the transcriptional level.
(11) The human placental villus tissue contains opioid receptors and peptides.
(12) Some of those drugs are able to stimulate the macrophages, even in an aspecific way, via the gut associated lymphatic tissue (GALT), that is in connection with the bronchial associated lymphatic tissue (BALT).
(13) The diffusion of Myocamicin in the prostatic tissue of patients undergoing prostatectomy after a single oral dose of 600 mg has been studied.
(14) Blood flow decreased immediately after skin expansion in areas over the tissue expander on days 0 and 1 and returned to baseline levels within 24 hours.
(15) However, decapitation did not eliminate the sex difference in the tissue content of P4 during control incubations.
(16) Content of cyclic nucleoside monophosphates was decreased in all the eye tissues in experimental toxico-allergic uveitis as well as penetration of cAMP into the fluid of anterior chamber of the eye.
(17) Histological studies of nerves 2 years following irradiation demonstrated loss of axons and myelin, with a corresponding increase in endoneurial, perineurial, and epineurial connective tissue.
(18) None of the other soft tissue layers-ameloblasts, stratum intermedium or dental follicle--immunostain for TGF-beta 1.
(19) One of these antibodies, MCaE11, was used for immunohistochemical detection of MAC in tissue and for quantification of the fluid-phase TCC in ethylenediaminetetraacetic acid plasma.
(20) A quantitative comparison of tissue distribution and excretion of an orally administered sublethal dose of [3H]diacetoxyscirpenol (anguidine) was made in rats and mice 90 min, 24 hr, and 7 days after treatment.