(n.) That which is laid; a stratum; a bed; one thickness, course, or fold laid over another; as, a layer of clay or of sand in the earth; a layer of bricks, or of plaster; the layers of an onion.
(n.) A shoot or twig of a plant, not detached from the stock, laid under ground for growth or propagation.
(n.) An artificial oyster bed.
Example Sentences:
(1) By 24 hr, rough endoplasmic reticulum in thecal cells increased from 4.2 to 7% of cell volume, while the amount in granulosa cells increased from less than 3.5% to more than 10%; the quantity remained relatively constant in the theca but declined to prestimulation values in the granulosa layer.
(2) These cells contained organelles characteristic of the maturation stage ameloblast and often extended to the enamel surface, suggesting a possible origin from the ameloblast layer.
(3) None of the other soft tissue layers-ameloblasts, stratum intermedium or dental follicle--immunostain for TGF-beta 1.
(4) Adding a layer of private pensions, it was thought, does not involve Government mechanisms and keeps the money in the private sector.
(5) Intraepidermal clefting starts at the junction between the basal and epidermal layers, and later involves all of the levels of the stratum spinosum.
(6) These data suggest that basophilic cell function in the superficial mucous layer in the nose is of greater significance in the development of nasal symptoms in response to nasal allergy than either mucociliary activity or nasal mucosal hypersensitivity to histamine.
(7) Likewise, they had little or no effects on the fluorescence anisotropy of TMA-DPH, which is also thought to be located in the interfacial region of the lipid bilayer, either when the probe was located in the outer layer of the plasma membrane or when the probe was located in the inner membrane compartment.
(8) While the heaviest anterogradely labeled ascending projections were observed to the contralateral ventral posterolateral nucleus of the thalamus, pars oralis (VPLo), efferent projections were also observed to the contralateral ventrolateral thalamic nucleus (VLc) and central lateral (CL) nucleus of the thalamic intralaminar complex, magnocellular (and to a lesser extent parvicellular) red nucleus, nucleus of Darkschewitsch, zona incerta, nucleus of the posterior commissure, lateral intermediate layer and deep layer of the superior colliculus, dorsolateral periaqueductal gray, contralateral nucleus reticularis tegmenti pontis and basilar pontine nuclei (especially dorsal and peduncular), and dorsal (DAO) and medial (MAO) accessory olivary nuclei, ipsilateral lateral (external) cuneate nucleus (LCN) and lateral reticular nucleus (LRN), and to a lesser extent the caudal medial vestibular nucleus (MVN) and caudal nucleus prepositus hypoglossi (NPH), and dorsal medullary raphe.
(9) Separation of PL by thin-layer chromatography revealed a prevalence of phosphatidylcholine followed by phosphatidylethanolamine.
(10) Thin layers of carbon (20 microns) and vacuoles (30 microns) suggested a large temperature gradient along the tissue ablation front.
(11) In cat, DARPP-32-immunoreactive cell bodies identified as Müller cells were demonstrated in the inner nuclear layer (INL) with processes closely surrounding the cell soma of photoreceptors in the outer nuclear layer.
(12) Suspensions of isolated insect flight muscle thick filaments were embedded in layers of vitreous ice and visualized in the electron microscope under liquid nitrogen conditions.
(13) We demonstrated that while the protein was incorporated into the cell layer at 6, 24, 48, and 72 hr, a far greater amount was secreted into the media.
(14) From this proliferating layer, precursor cells migrate outwards to reach the developing neostriatum in a sequential fashion according to two gradients of histogenesis.
(15) In many areas there are additional indications of thalamic terminations in deeper layers.
(16) Their narrowed processes pass at a common site through the muscle layer and above this layer again slightly widen and project above the neighbouring tegument.
(17) One month after unilateral transection of the fimbria-fornix an almost complete lack of cholinergic fibers persists in all layers of the dorsal hippocampus and fascia dentata ipsilateral to the lesion when compared to the contralateral hippocampus or to unlesioned control rats.
(18) After methylene blue, the gradient in resting potential across the circular layer was greatly reduced or abolished.
(19) In contrast, boundary layer diffusion is operative in the release from the matrixes prepared by compression of physical mixtures.
(20) This hydrostatic pressure may well be the driving force for creating channels for acid and pepsin to cross the mucus layer covering the mucosal surface.
Zona
Definition:
(n.) A zone or band; a layer.
Example Sentences:
(1) While the heaviest anterogradely labeled ascending projections were observed to the contralateral ventral posterolateral nucleus of the thalamus, pars oralis (VPLo), efferent projections were also observed to the contralateral ventrolateral thalamic nucleus (VLc) and central lateral (CL) nucleus of the thalamic intralaminar complex, magnocellular (and to a lesser extent parvicellular) red nucleus, nucleus of Darkschewitsch, zona incerta, nucleus of the posterior commissure, lateral intermediate layer and deep layer of the superior colliculus, dorsolateral periaqueductal gray, contralateral nucleus reticularis tegmenti pontis and basilar pontine nuclei (especially dorsal and peduncular), and dorsal (DAO) and medial (MAO) accessory olivary nuclei, ipsilateral lateral (external) cuneate nucleus (LCN) and lateral reticular nucleus (LRN), and to a lesser extent the caudal medial vestibular nucleus (MVN) and caudal nucleus prepositus hypoglossi (NPH), and dorsal medullary raphe.
(2) Major limitations of the conventional sperm penetration assay are the inability to assess several aspects of sperm function (zona binding and penetration) and the absence of human ovulatory products known to influence fertilization.
(3) The effects of clozapine on the spontaneous firing rate of noradrenergic (NE, locus coeruleus), dopaminergic (DA, zona compacta, ventral tegmental area) and non-dopaminergic (zona reticulata) neurons was studied in chloral hydrate anesthetized rats.
(4) Zona pellucida solubility, plasminogen activator production, and plasminogen conversion to plasmin increased as embryonic stage advanced; however, plasminogen activator production and plasmin conversion to plasmin were poorly correlated with zona pellucida solubility.
(5) The results indicate that the sperm swelling test and the zona-free hamster ovum penetration assay are evaluating different functional qualities of sperm that are apparently not associated with each other.
(6) It was found by this HPLC that the amino groups of PZP3 hardly reacted with FITC, whereas those of PZP1 and 2 fairly reacted, reflecting the organization of these families in the zona structure.
(7) Quantitative morphological study of the zona glomerulosa of the rat adrenal was carried out.
(8) The fragment showed smooth muscle relaxant activity in the rabbit aorta and chick rectum assays, an inhibitory effect on aldosterone secretion from bovine adrenal zona glomerulosa cells, and had affinity for specific ANF receptors located in zona glomerulosa cell membranes.
(9) The nuclear masses are known as (1) the area lateralis hypothalami (ALH), (2) the nucleus entopeduncularis (nEp), (3) the nucleus semilunaris accessorius (nSA), (4) the nucleus ventromedialis hypothalami (nVmH), and (5) the posterolateral portion of the zona incerta (ZI).
(10) The zonae pellucidae were isolated from ovarian tissue following described mincing techniques.
(11) In the Marmoset monkey, DARPP-32-LI was also observed in the zona glomerulosa of the adrenal cortex.
(12) Mouse sperm bind to zonae pellucidae of cumulus-free eggs in vitro in a Ca2+-dependent reaction; these sperm are intact by the CTC assay.
(13) These findings suggest that AII enhances the growth and the steroidogenic capacity of rat adrenal zona fasciculata.
(14) The capsule which surrounds the pre-attachment equine embryo has been compared with the zona pellucida (zp) that it replaces, as well as with the rabbit blastocyst coverings, by means of physicochemical and immunological methods.
(15) This case illustrates: (1) acid medium, chymotrypsin, or sucrose are not needed for the procedure of zona cutting; (2) the zygotes resulting from zona cutting survive through freezing and thawing; and (3) oocyte retrieval can be done concomitant with conservative surgery for endometriosis.
(16) Also, for determination of the fertilizing capacity of the semen, a zona-free hamster ovum penetration test was done in 49 men, while 14 men were studied by determination of the fertilization of human oocytes in vitro.
(17) Whether these two sera specifically affect sperm-zona pellucida binding or non-specifically affect the normal progression of capacitation remains to be eludicated.
(18) Within the zona interna of the median eminence, vasopressin and neurophysin were present in two populations of axons, one with granules of 1300-1500 A and one with granules of 900-1300 A.
(19) The lectins bound to all charge species of the three major zona pellucida glycoproteins.
(20) Yet serum with positive I-IBT for IgM did not affect sperm-zona binding (HZIs=17.1 vs. 19.4; p.1).