title: Softening hard keratin in specimens for microscopic sections.
mesh_terms: D006652:Histological Techniques; D006801:Humans; D007633:Keratins; D008722:Methods; D009262:Nails; D013440:Sulfides; D013864:Thioglycolates
chemical_list: D013440:Sulfides; D013864:Thioglycolates; D007633:Keratins