What's the difference between outer and periderm?

Outer


Definition:

  • (a.) Being on the outside; external; farthest or farther from the interior, from a given station, or from any space or position regarded as a center or starting place; -- opposed to inner; as, the outer wall; the outer court or gate; the outer stump in cricket; the outer world.
  • (n.) The part of a target which is beyond the circles surrounding the bull's-eye.
  • (n.) A shot which strikes the outer of a target.
  • (v.) One who puts out, ousts, or expels; also, an ouster; dispossession.

Example Sentences:

  • (1) However, four of ten young adult outer arm (relatively sun-exposed) and one of ten young adult inner arm (relatively sun-protected) fibroblasts lines increased their saturation density in response to retinoic acid.
  • (2) The amino-terminal region of a 70 kDa mitochondrial outer membrane protein of yeast and the presequence of cytochrome c1, an inner membrane protein exposed to the intermembrane space, are thought to be responsible for localizing the proteins in their final destinations after synthesis in the cytosol.
  • (3) These findings may not indicate a redistribution of renal blood flow through resistance changes in specific parts of the renal vasculature but may represent the consequences of focal cortical ischaemia, most prominent in the outer cortex.
  • (4) Immunogold electron microscopy demonstrated that outer dense fibres were the predominant immunoreactive site.
  • (5) Two kinds of silicafiberscopes with outer diameters 0.80 and 0.45 mm were used in the present study.
  • (6) The spikes likely correspond to VP3, a hemagglutinin, while the rest of the mass density in the outer shell represents 780 molecules of VP7, a neutralization antigen.
  • (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) Comparison of the 50% binding concentrations of the compounds for the various PBPs of the five strains with their antibacterial activity indicates that the different antibiotics are excluded to a greater or lesser degree by the outer membrane permeability barrier and that the exclusion is most pronounced in P. aeruginosa.
  • (9) Neisseria meningitidis group B serotype 2 strain M986 contains two predominant outer membrane proteins, with apparent molecular weights of 41,000 (protein b) and 28,000 (protein e).
  • (10) Based on these results we conclude that the outer membrane preparation seems to be more suitable for the serodiagnosing of H.pylori-specific antibodies.
  • (11) We evaluated the safety and efficacy of a conjugate vaccine that links the H. influenzae type b capsular polysaccharide to the outer-membrane protein complex (OMPC) of Neisseria meningitidis serogroup B.
  • (12) 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.
  • (13) Isolated outer hair cells from the organ of Corti of the guinea pig have been shown to change length in response to a mechanical stimulus in the form of a tone burst at a fixed frequency of 200 Hz (Canlon et al., 1988).
  • (14) On histopathologic examination there were microabscesses in the inner choroid and subretinal space, disrupting the outer retina but sparing the inner retina.
  • (15) Opsin becomes incorporated into the disk membrane by a process of membrane expansion and fusion to form the flattened disks of the outer segment.
  • (16) Some of these proteins are first secreted into the periplasm and then cross the outer membrane in a separate step.
  • (17) Gonococcal outer membranes were purified by differential ultracentrifugation of sheared organisms treated with EDTA.
  • (18) Changes in protein phosphorylation induced by phagocytic challenge were identified in cultured rat retinal pigment epithelium (RPE) following exposure to isolated rat rod outer segments (ROS) or to polystyrene latex microspheres (PSL).
  • (19) The cells are predominantly monopolar, tightly packed, and are flattened at the outer border of the ring.
  • (20) Alveoli underlying the plasma membrane sometimes contain binding sites, particularly on their outer membranes.

Periderm


Definition:

  • (n.) The outer layer of bark.
  • (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.

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