Characterization of anti-crotalic antibodies

► Crotalus durissus terrificus antiserum cross-reacts with Brazilian C. s.p. venoms. ► C. d. terrificus antiserum cross-neutralizes lethality of Brazilian C. s.p. venoms. ► C. d. terrificus antiserum recognizes purified crotoxin and PLA2. ► Anti-C.d. terrificus crotoxin or PLA2 sera recognize-neutralize crude venom lethality. ► Anti-C. d. terrificus prepared with low doses of venom neutralize venom lethality.