What's the difference between foreskin and sheath?

Foreskin


Definition:

  • (n.) The fold of skin which covers the glans of the penis; the prepuce.

Example Sentences:

  • (1) In the second comparison, HSV was isolated from 225 of 1,026 (21.9%) specimens and duplicate human foreskin fibroblast cell wells stained at 24 and 72 h were PAP positive in 241 of 1,026 (23.5%).
  • (2) Human melanocyte cultures were established using disaggregated epidermal cell suspensions derived from foreskins and plated onto culture dishes in medium containing 2% fetal bovine serum, growth factors, hormones, and melanocyte growth factor (MGF) extracted from bovine hypothalamus (Wilkins et al., J.Cell.
  • (3) We have examined the proteolytic processing of radiolabeled epidermal growth factor (EGF) in EGF growth-responsive human foreskin fibroblasts (HFF) versus EGF nonresponsive human fetal lung fibroblasts (HFL).
  • (4) Over 95% of attributable risk in men with STD was either genital ulceration or the presence of a foreskin.
  • (5) A penile problem that physicians are confronted with in the emergency room is entrapment of the foreskin by a zipper fastener.
  • (6) In this study we have found that NK activity of fresh splenocytes measured against HSV-2 infected human foreskin fibroblast (HFF) is stimulated in vitro and in vivo by rIL 2 in a biphasic dose range similar to that determined for protection against disease.
  • (7) Interferons produced in human peripheral leukocytes (LE) and foreskin fibroblast (FS-4) cells were subjected to affinity chromatography on Sepharose-bound globulins from rabbits immunized with these interferons.
  • (8) In contrast, infection of human primary chondrocyte cells (C23), synovial cells (HSA), and foreskin fibroblasts (F13) was apparently independent of cell CD4-mediated mechanisms.
  • (9) We studied the effects of various immunologic and inflammatory mediators on the expression of the class II major histocompatibility antigens, HLA-DR and DQ in short-term organ cultures of newborn human foreskin.
  • (10) Specific antibody-mediated neutralization of infectious human papillomavirus type 11 (HPV-11) was achieved in the athymic mouse xenograft system, in which HPV-11 induced morphological transformation of human foreskin.
  • (11) To study the synthesis of the EBA antigen, cultured human keratinocytes and fibroblasts, derived from neonatal foreskins, were metabolically labeled with 14C-labeled amino acids.
  • (12) Nevertheless, because of the need for a scrotal flap of fat to prevent fistula formation and to ensure vascularization of the graft, and because of the availability of a vascularized flap from the foreskin in most cases, the free graft patch procedure is best reserved for cases in which the foreskin is either absent or deficient.
  • (13) Normal thyrocytes were cultured with either mitomycin C-treated endothelial cells or mitomycin C-treated human foreskin fibroblasts.
  • (14) Despite the vogue for conservatism, circumcision still has an important part to play in the management of troublesome foreskins in children.
  • (15) One hundred consecutive cases of boys with foreskin problems referred to local paediatric surgeons in the Edinburgh area were studied.
  • (16) Cytokeratin expression in differentiating cultured foreskin keratinocytes was studied using chain-specific anti-cytokeratin monoclonal antibodies directed against cytokeratins 4, 8, 10, 13, 18, and 19, respectively.
  • (17) The protein kinase C (PKC) inhibitor staurosporine was found to dramatically alter the actin microfilament cytoskeleton of a variety of cultured cells, including PTK2 epithelial cells, Swiss 3T3 fibroblasts, and human foreskin fibroblasts.
  • (18) Experiments probing the mechanism by which glucocorticoids modulate cell proliferation were carried out on serum-free cell cultures of quiescent human diploid foreskin (HF) cells.
  • (19) In contrast, DNA synthesis in keratinocytes derived from neonatal foreskins was consistently suppressed by retinoic acid, independent of the polyamine status.
  • (20) Normal diploid foreskin fibroblasts and a histiocytic lymphoma cell line were deprived of CABLA production.

Sheath


Definition:

  • (n.) A case for the reception of a sword, hunting knife, or other long and slender instrument; a scabbard.
  • (n.) Any sheathlike covering, organ, or part.
  • (n.) The base of a leaf when sheathing or investing a stem or branch, as in grasses.
  • (n.) One of the elytra of an insect.

Example Sentences:

  • (1) The oral nerve endings of the palate, the buccal mucosa and the periodontal ligament of the cat canine were characterized by the presence of a cellular envelope which is the final form of the Henle sheath.
  • (2) Electron microscopic observations of the masseter nerve in the aged cats revealed a disruption of the myelin sheaths and a pronounced increase in collagen fibers in the endoneurium and perineurium.
  • (3) The authors propose three regular procedures with which they are experienced: repair with a large retromuscular nonabsorbable synthetic tulle prosthesis for extensive epigastric eventrations, fillup aponeuroplasty using the sheath of the rectus abdominis associated with a premuscular patch in case of diastasis or of multiple superimposed orifices and suture associated with a small retromuscular auxiliary patch to treat small incisional hernias.
  • (4) Extraction tools included flexible, telescoping sheaths advanced over the lead to dilate scar tissue and apply countertraction, deflection catheters, and wire basket snares.
  • (5) Thirteen soft tissue sarcomas with ultrastructural evidence of nerve sheath differentiation were investigated by immunohistochemistry.
  • (6) This cell population gives rise initially to oligodendrocytes and then to type-2 astrocytes, both of which apparently collaborate in sheathing axons in the CNS.
  • (7) Rabbit antirat T-cell serum (ALS(T)) reacted selectively with the surfaces of lymphocytes in the paracortex of lymph node and in the periarteriolar sheath of spleen, and with thymocytes.
  • (8) After properly fixing the vas deferens with a ring clamp, the surgeon pierces the scrotal skin, vas sheath, and vas deferens in the midline with a curved dissecting clamp held at a 45 degree angle from horizontal.
  • (9) We immunohistochemically examined the expression of Schwann cell-related markers, nerve growth factor (NGF) receptor, S-100 alpha- and beta-proteins, glial fibrillary acidic protein (GFAP), and galactocerebroside (gal C) in 5 malignant schwannomas, 21 benign peripheral nerve sheath tumors, and 4 apparently normal sural nerves.
  • (10) The transversalis fascia of the floor of the femoral canal turns down to form the medial wall of the venous compartment of the femoral sheath, and has the support of the curved edge of the lacunar ligament which effectively bars the femoral canal from entering the thigh.
  • (11) Unique domains of the retinal interphotoreceptor matrix (IPM), termed cone matrix sheaths, are composed largely of chondroitin 6-sulfate proteoglycan in most higher mammalian species.
  • (12) 2ME treatment caused partial solubilization of the sheaths (45% as determined by amino acid analysis), which could be further improved by combining 2ME with SDS.
  • (13) The 6.8F ultrasound balloon catheter was placed percutaneously in the right femoral artery through a 9F sheath.
  • (14) The isolated outer sheath was observed as a triple-layered, closed vesicle carrying a polygonal array by electron microscopy.
  • (15) These data show that the 515 nm absorbance change is not limited to small closed vesicles like grana, but in the presence of suitable electron donors single lamellae of bundle sheath chloroplasts can also be active.
  • (16) An outer sheath was isolated from Treponema phagedenis biotype Reiter by our previously developed method (Masuda, K., and Kawata, T. 1982.
  • (17) Seven tumours were predominantly of blue and spindle-cell, fascicular type, resembling malignant peripheral nerve sheath tumour and at times monophasic synovial sarcoma.
  • (18) Several additional groups of muscle cells of more limited mass and spatial distribution include the vulval muscles of hermaphrodites, the male sex muscles, the anal-intestinal muscles, and the gonadal sheath of the hermaphrodite.
  • (19) The notochord, which is composed of a stack of flat cells surrounded by a connective tissue sheath, elongates dramatically and begins straightening between stages 21 and 25.
  • (20) Under fluoroscopic control a lower polar calix was punctured with 18 G sheathed needle; a guide wire was introduced through the sheet.