TY - SER AU - Sforcin,J.M. AU - Kaneno,R. AU - Funari,S.R.C. TI - Absence of seasonal effect on the immunomodulatory action of brazilian propolis on natural killer activity KW - PROPOLIS KW - PRODUTO DE ORIGEM ANIMAL KW - COMPOSICAO DE ALIMENTO KW - MEDICAMENTO KW - VARIACAO SAZONAL KW - ANALISE COMPARATIVA UR - http://dx.doi.org/10.1590/S0104-79302002000100003 ER -