| Unna's disease | <dermatology> A form of inflammatory skin rash that results from an over activity of the sebaceous glands in the skin. Treatment often includes a mild hydrocortisone-containing cream. (27 Sep 1997) |
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| Unna's mark | A pale vascular birthmark found on the nape of the neck in 25 to 50% of normal persons. Synonym: Unna's mark. (05 Mar 2000) |
| Unna's stain | <technique> An alkaline methylene blue stain for plasma cells, a polychrome methylene blue stain with which mast cells are stained red (metachromatic). (05 Mar 2000) |
| Unna-Pappenheim stain | <technique> A contrast stain consisting of a methyl green-pyronin solution; originally used for gonococci, but later used to detect RNA and DNA in tissue sections; RNA is stained red and DNA appears green; used to demonstrate plasma cells during chronic inflammation. See: methyl green-pyronin stain. (05 Mar 2000) |
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| Unna, Paul | <person> German dermatologist and staining expert, 1850-1929. See: Unna's disease, Unna's mark, Unna's stain, Unna-Pappenheim stain, Unna-Taenzer stain. (05 Mar 2000) |
| Unna-Taenzer stain | <technique> An orcein solution used for staining elastic tissue. Synonym: Unna-Taenzer stain. (05 Mar 2000) |