Geetha, P BKoshy, A ADandawate, C NShaikh, B HGhosh, S NBorkar, P S1982-02-012009-05-271982-02-012009-05-271982-02-01Geetha PB, Koshy AA, Dandawate CN, Shaikh BH, Ghosh SN, Borkar PS. Detection of hepatitis B surface antigen by Elisa technique using penicillinase (beta-lactamase) labelled caprine antibody to HBsAg. Hindustan Antibiotics Bulletin. 1982 Feb-May; 24(1-2): 34-7http://imsear.searo.who.int/handle/123456789/2526engAnimalsEnzyme-Linked Immunosorbent AssayGoats --immunologyHepatitis B AntibodiesHepatitis B Surface Antigens --analysisHumansPenicillinase --diagnostic usebeta-Lactamases --diagnostic useJournal Article