An investigation of the specificity of antibodies raised to the crotoxin complex (from the venom of Crotalus durissus terrificus) using the methods of double-immunodiffusion and the enzyme-linked immunosorbent assay (elisa): P. Gopalakrishnakone, B.J. Hawgood, ∗R.D.G. Theakston and A.H. Reid Department of Physiology, Queen Elizabeth College (University of London), London W8 7AH, and ∗WHO Antivenom Centre, Liverpool School of Tropical Medicine, Liverpool L3 5QA, U.K.