title: Conversion to positivity of false negative latex/hepatitis associated antigen agglutination test upon treatment of sera with edta or trypsin.
mesh_terms: D004492:Edetic Acid / Q000494:pharmacology*; D005188:False Negative Reactions; D006509:Hepatitis B / Q000175:diagnosis*; D006511:Hepatitis B Antigens / Q000032:analysis*; D006801:Humans; D007841:Latex Fixation Tests / Q000379:methods*; D014357:Trypsin / Q000494:pharmacology*
chemical_list: D006511:Hepatitis B Antigens; D004492:Edetic Acid; D014357:Trypsin