What's the difference between dermal and dermis?

Dermal


Definition:

  • (a.) Pertaining to the integument or skin of animals; dermic; as, the dermal secretions.
  • (a.) Pertaining to the dermis or true skin.

Example Sentences:

  • (1) Immunofluorescent staining for HLA-DR showed dermal positivity in 12 of 13 involved- and 9 of 13 uninvolved-skin biopsy specimens from scleroderma patients, compared with only 1 of 10 controls.
  • (2) The tetracaine component of TAC is superfluous for obtaining topical anesthesia of minor dermal lacerations of the face in children.
  • (3) New lamellae are formed by these cuboidal cells which then divide and migrate into the lamellae where they assume the characteristic attenuated appearance of fibroblasts in the adult dermal lamellae region.
  • (4) The participation of neural crest cells in development of the dermal skeleton is discussed by way of the repartition of the odontods within the pectoral fin.
  • (5) Cultured human dermal fibroblast cells were labeled with [35S]methionine, and the membrane-bound cyclooxygenase was solubilized and immunoprecipitated 35S-labeled fibroblast cyclooxygenase migrated on sodium dodecyl sulfate-polyacrylamide gel electrophoresis with a molecular size of approximately 73,000 daltons, similar to that of native sheep cyclooxygenase and of cyclooxygenase covalently labeled by [3H]aspirin, i.e.
  • (6) Both before and after application of the stimulus, the walls of the superficial dermal vessels of the patients with dermographism were thinner and contained less extracellular matrix material than vessel walls of the patients with cold-induced urticaria.
  • (7) The results suggest that chronic sunlight exposure may be associated with an impediment to normal maturation of human dermal collagen resulting in tenuous amount of HHL.
  • (8) We have investigated the whole-body dermal penetration of styrene, xylene, toluene, perchloroethylene, benzene, halothane, hexane, and isoflurane in rats and compared the permeability constants with available human studies on vapor penetration.
  • (9) Calification of dermal elastic fibers is a characteristic feature of affected skin.
  • (10) In 3 cases, this was due to recurrence of the tumor, and in 2 cases the cause was dermal necrosis.
  • (11) Focal dermal hypoplasia (FDH) is a rare ectomesodermal dysplasia syndrome characterized by cutaneous, skeletal, dental, ocular, and soft-tissue defects.
  • (12) In a transgenic mouse model, dermal fibrosarcomas develop in a pathway comprised of at least three stages: mild fibromatosis, aggressive fibromatosis, and fibrosarcoma.
  • (13) Dermal infiltrates were larger in the allergic response, but epidermal invasion was greater in the irritant reaction.
  • (14) This calcium-binding protein was not in skin epidermis, but was confined to the dermal layer.
  • (15) Maximal acyloxyacyl hydrolysis reduced lipopolysaccharide tissue toxicity, as measured in the dermal Shwartzman reaction, by a factor of 100 or more.
  • (16) Responses of keratinocytes, epidermal dendritic non-keratinocytes and dermal leukocytes were therefore recorded following multiple topical applications of the potent complete tumor-promoting agent 12-O-tetradecanoylphorbol-13-acetate (TPA).
  • (17) The progeny exposed to DES prenatally and DMBA postnatally (DES-DMBA-exposed progeny) developed a greater multiplicity of tumors per tumor-bearing animal (p less than 0.001) and higher rates of neoplasms of the reproductive tract, e.g., ovarian and uterine tumors, mammary gland and forestomach tumors, and dermal melanomas.
  • (18) In this study, we examined the modulation of cell surface expression of MHC antigens and the CAM intercellular adhesion molecule 1 (ICAM-1), lymphocyte function antigen 3 (LFA-3), and CD44 on human dermal microvascular endothelial cells (HDMEC) both grown in monolayers and differentiated into capillary-like structures on the basement membrane-like substrate matrigel.
  • (19) Dermal collagen, elastin, and glycosaminoglycans are altered.
  • (20) Histopathologically, the lesions display caseating and noncaseating dermal granulomas that mimic those seen in tuberculosis, tuberculoid leprosy, sarcoidosis, and other diseases.

Dermis


Definition:

  • (n.) The deep sensitive layer of the skin beneath the scarfskin or epidermis; -- called also true skin, derm, derma, corium, cutis, and enderon. See Skin, and Illust. in Appendix.

Example Sentences:

  • (1) As with alloplastic orbital implant extrusions in enucleated sockets, autogeneous dermis fat grafts can be useful in managing extrusions in previously eviscerated sockets.
  • (2) It increased linearly in both the epidermis and dermis, reaching nearly 100% 24 hr following its injection on Day 8.
  • (3) Thinning of the dermis and the arrangement of collagen in parallel bundles appear to be constant findings.
  • (4) These injections led to epidermal hyperplasia in areas overlying the irritant and the effect was most significant when the irritant was placed in the upper dermis.
  • (5) The dermis from the more severely injured skin of both groups showed a homogeneous appearance ("necrosis").
  • (6) Applied atelocollagen was histopathologically compared with applied lyophilized porcine dermis (LPD) and controls in rats, with regard to the time course of healing.
  • (7) First, vasculitis extending deep into the reticular dermis or subcutaneous tissue seemed to be associated more often with systemic disease such as malignancy or connective tissue disease.
  • (8) Histologic examination of biopsy specimens from the involved area of skin revealed the presence of inflammatory cell infiltrates and various degrees of collagen accumulation in the dermis, subcutis, fascia, and underlying muscle.
  • (9) The biopsy findings consisted of eosinophilic individual necrosis of epidermal cells, satellite cell necrosis, basal liquefaction degeneration, and scanty cell infiltration into the dermis.
  • (10) Ten tissue sections from 10 examples of Bowen's disease were excised from paraffin blocks, rehydrated, and incubated in 90% formic acid at 45 degrees C for 18 h. The epidermis was gently removed with the aid of a dissecting microscope, and the remaining dermis with attached basal lamina was processed for scanning electron microscopy.
  • (11) Monoclonal antibody studies performed on biopsy specimens from both patients revealed 70% to 100% cells staining with CD5, 80% to 90% staining with CD4, 30% to 50% staining with CD8, and an increase in CD1-staining cells in the papillary dermis, indicating a predominantly helper T-cell infiltrate.
  • (12) The pathologic findings were dominated by lymphocytic inflammation around centrally placed follicles evolving to follicular necrosis that extended to the perifollicular epidermis and dermis.
  • (13) Similar vacuoles were also observed in the epidermal intercellular spaces and within the dermis.
  • (14) Acitretin flux through tape-stripped monkey skin and dermis was only slightly higher than through intact skin.
  • (15) Two had multiple nodules and the third had a single, recurrent lesion in the dermis or subcutis of the distal extremities.
  • (16) The increase of PGD synthetase activity in 3-week-old rats was mainly due to the increase of specific activity of PGD synthetase in the epidermis, which was separated from the dermis by heat treatment (55 degrees C, 30 s).
  • (17) This collagen appeared present throughout the whole dermis with slight variations at 4 months, where there was less extracellular collagen near the hair bulbs.
  • (18) The key assumptions are (1) that the target site is in the lower epidermis (basal layer) or in the dermis, and (2) that it is the thermodynamic activity (i.e., the free drug concentration, C*, of the active drug species) at the target site that is the true correlate of drug effectiveness.
  • (19) In initial lesions, CD1a+ cells represent up to 50-60% of the infiltrating cells of the dermal compartment, in several cases being preferentially localized in the upper part of the papillar dermis close up to the epidermal CD1a+ cells in basal position, whereas in chronic psoriasis they represent less than 10%.
  • (20) An antiserum raised in Rabbits against brain glycoprotein precipitated an identical antigen in faetal dermis and intestine extracts, and also in non nervous tumors (breast adenocarcinomas and adenofibromas, ovarian cystadenoma, gastric and colonic adenocarcinomas, hepatomas, malignant melanomas, rhabdomvosarcoma, fibrosarcomas).

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