| Nikolsky | Pyotr V., Russian dermatologist, 1858-1940. See: Nikolsky's sign. (05 Mar 2000) |
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| Nikolsky's sign | <clinical sign> A peculiar vulnerability of the skin in pemphigus vulgaris; the apparently normal epidermis may be separated at the basal layer and rubbed off when pressed with a sliding motion. (05 Mar 2000) |