A man had a rare pigmented nodule on his scalp that developed from birthmarks.  
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  February 2010   in “Journal of Cell Science”    Human dermal stem cells can become functional skin pigment cells.  
     
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  May 2022   in “The journal of investigative dermatology/Journal of investigative dermatology”    Skin lesions in Carney Complex are caused by a gene change in some skin cells that leads to increased pigmentation and may lead to tumors.  
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  March 1998   in “Journal of Investigative Dermatology”    The transgene likely activated an oncogene or interrupted a tumor suppressor gene, causing melanoma in mice.  
     
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  January 2014   in “BioMed research international”    Rat whisker cells can help turn other cells into nerve cells and might be used to treat brain injuries or diseases.