J. C. ALARCÓN P., H. I. CASTAÑO P., L. L. CORRALES G., S. L. JIMÉNEZ R., and A. DÍAZ C., “EVALUATION OF SOME GROWTH REGULATORS COMBINATION FOR CALLUS INDUCTION IN ANNATTO (<I>Bixa orellana</I> L.) ACTIVE PLANT AGAINST SNAKE BITES”, Vitae, vol. 13, no. 1, Feb. 2009.