title: Tyrosine-rich crystals in pleomorphic adenomas of parotid glands.
abstract: Histochemical methods for proteins were applied to crystals found in pleomorphic adenomas of the parotid. Positive reactions were obtained with methods for tyrosine, tryptophan, arginine and sulphydryl groups, and indicate a greater complexity of composition than has previously been acknowledged.
mesh_terms: D008949:Adenoma, Pleomorphic / Q000378:metabolism*; D000328:Adult; D003461:Crystallography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010307:Parotid Neoplasms / Q000378:metabolism*; D013194:Staining and Labeling; D014443:Tyrosine / Q000378:metabolism*
chemical_list: D014443:Tyrosine