TY - SER AU - Sevcik,C. AU - D'suze,G. TI - Annual variations of the sodium channel blocking toxin in Venezuelan cattle prone to develop the bovine paraplegic syndrome: its dependence on rain KW - BOVINO KW - TOXINA KW - METABOLISMO ANIMAL KW - PARALISIA KW - CHUVA KW - SINDROME UR - http://dx.doi.org/10.1590/S0104-79301998000100005 ER -