title: Synovial fluid mast cells.
mesh_terms: D001168:Arthritis / Q000473:pathology; D006632:Histamine / Q000032:analysis; D006801:Humans; D008407:Mast Cells / Q000473:pathology*; D013582:Synovial Fluid / Q000032:analysis / Q000166:cytology*
chemical_list: D006632:Histamine