keratoacanthoma (medicine) and ribonuclease h, calf thymus (medicine)

keratoacanthoma (medicine)

keratoacanthoma

A benign, non-neoplastic, usually self-limiting epithelial lesion closely resembling squamous cell carcinoma clinically and histopathologically. It occurs in solitary, multiple, and eruptive forms. The solitary and multiple forms occur on sunlight exposed areas and are identical histologically; they affect primarily white males. The eruptive form usually involves both sexes and appears as a generalised papular eruption.

ribonuclease h, calf thymus (medicine)

ribonuclease h, calf thymus
<enzyme> A ribonuclease that specifically cleaves the RNA moiety of RNA:DNA hybrids. It has been isolated from a wide variety of prokaryotic and eukaryotic organisms (particularly calf thymus) as well as retroviruses.

Registry number: EC 3.1.26.4

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