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A Mongolian spot, also known as slate grey nevus or congenital dermal melanocytosis, is a benign, flat, congenital birthmark with wavy borders and an irregular shape. In 1883, it was described and named after Mongolians by Erwin Bälz, a German anthropologist based in Japan, who erroneously believed it to be most prevalent among his Mongolian patients.
Positive histologic stains that aid in the diagnosis of conditions of or affecting the human integumentary system Stain Cell, material, and/or structure(s) stained Condition(s) in which stain is positive Actin-specific enolase: Infantile digital fibromatosis: AE1/AE3: Squamous cell carcinoma: Alcian blue: Lipoid proteinosis Papular mucinosis ...
Irregular in appearance, they are usually quite large, and caused by a deficiency or absence in the nerve supply to blood vessels. This causes vasodilation, the dilation of blood vessels, causing blood to pool or collect in the affected area. [9] Over time, port-wine stains may become thick or develop small ridges or bumps, and do not fade with ...
Blot the stain: Start by blotting the area with a clean cloth to absorb as much of the grease as possible. Mix the solution: in a small bowl, mix a few drops of grease-fighting dish detergent with ...
Apply the mixture to the stain before letting it sit for an hour and then blotting away with a clean cloth. If the stain persists, repeat the process by applying the mixture, letting it sit, and ...
The basic stain removal guidelines—act quickly, blot, use cold water—apply for carpet but the most effective method will depend on the material and the stain itself. “As soon as the spill ...
Western blot workflow. The western blot (sometimes called the protein immunoblot), or western blotting, is a widely used analytical technique in molecular biology and immunogenetics to detect specific proteins in a sample of tissue homogenate or extract. [1]
These include bacterial infections including leprosy, and the sample should therefore be stained with Ziel-Neelsen, acid fast stains, Gomori methenamine silver, PAS, and Fite stains. [2] If negative, an unspecific lymphohistocytic dermatosis may be caused by drug reactions and viral infections.