Isolation and Chemical Analysis of a Fatty Acid Fraction of Kalanchoe pinnata with a Potent Lymphocyte Suppressive Activity - Almeida, A P; Da Silva, S A.G.; Souza, M L.M.; Lima, L M.T R.R.; Rossi-Bergmann, B; Gonçalves de Moraes, V L; Costa, S S (Planta Medica, 2000)