basal cells
General term for relatively undifferentiated cells in an epithelial sheet that give rise to more specialized cells (act as stem cells). In the stratified squamous epithelium of mammalian skin the basal cells of the epidermis (stratum basale) give rise by an unequal division to another basal cell and to cells that progress through the spinous, granular and horny layers, becoming progressively more keratinised, the outermost being shed as squames. In olfactory mucosa the basal cells give rise to olfactory and sustentacular cells. In the epithelium of epididymis their function is unclear, but they probably serve as stem cells.

Dictionary of molecular biology. 2004.

Look at other dictionaries:

  • Basal cells — Small, round cells found in the lower part, or base, of the epidermis, the outer layer of the skin …   Medical dictionary

  • basal-cell carcinoma — n a skin cancer derived from and preserving the form of the basal cells of the skin …   Medical dictionary

  • Basal cell carcinoma — Infobox Disease Name = Basal cell carcinoma Caption = DiseasesDB = 1264 ICD10 = ICD9 = ICD9|173 ICDO = 8090/3 8093/3 OMIM = 605462 MedlinePlus = eMedicineSubj = med eMedicineTopic = 214 MeshID = D002280 Basal cell carcinoma is a type of skin… …   Wikipedia

  • Basal cell carcinoma — n. BCC, common form of skin cancer malignant tumor (usually doesn t metastasizes) in which the cancer cells look like the basal cells of the epidermis and is found on the face and neck where the skin is exposed to ultraviolet sunlight (it appears …   English contemporary dictionary

  • basal cell carcinoma — A type of skin cancer that arises from the basal cells, small round cells found in the lower part (or base) of the epidermis, the outer layer of the skin …   English dictionary of cancer terms

  • basal cell carcinoma — (= BCC; rodent ulcer) Common carcinoma derived from the basal cells of the epidermis. Often a consequence of exposure to sunlight and much more common in those with fair skin; rarely metastasises …   Dictionary of molecular biology

  • basal cell carcinoma — the most common form of skin cancer, consisting of an epithelial tumor of the skin originating from neoplastic differentiation of basal cells; many patients have histories of exposure to ionizing radiation, and less often of arsenic poisoning.… …   Medical dictionary

  • basal cell carcinoma — ba′sal cell carcino′ma n. pat a common and usu. curable skin cancer that arises from basal cells of the epithelium …   From formal English to slang

  • basal-cell carcinoma — noun : a skin cancer derived from and preserving the form of the basal cells of the skin …   Useful english dictionary

  • Basal metabolic rate — (BMR), and the closely related resting metabolic rate (RMR), is the amount of daily energy expended by humans and animals at rest. Rest is defined as existing in a neutrally temperate environment while in the post absorptive state. In plants,… …   Wikipedia

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