PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 6410541-1 1983 In cytochemical studies of B16 melanoma cells with the dopa reaction for tyrosinase, a false positive result that can easily be confused with authentic reactions has been observed. Dihydroxyphenylalanine 55-59 tyrosinase Mus musculus 73-83