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True or False. A skin biopsy shows cells arranged in distinct layers, with flat, dead cells on the surface and actively dividing cube-shaped cells deeper down. This cellular organization indicates normal skin tissue showing healthy cell differentiation and replacement processes.
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True.
Explanation: Normal epidermis is stratified squamous keratinized epithelium — mitotically active basal (cuboidal/columnar) cells in the deeper stratum basale, with progressively flatter, keratin-filled cells toward the surface (stratum corneum) that are dead. This layered organization reflects normal differentiation and replacement.
Explanation: Normal epidermis is stratified squamous keratinized epithelium — mitotically active basal (cuboidal/columnar) cells in the deeper stratum basale, with progressively flatter, keratin-filled cells toward the surface (stratum corneum) that are dead. This layered organization reflects normal differentiation and replacement.
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