MEDIUM COMPOSITION FOR EXTERNAL FERTILIZATION

摘要

Object: to provide a medium composition for external fertilization, in particular, one to be used in the incubation of an ovum or an early embryo, i.e., a fertilized ovum or in the pretreatment of an ovum or sperms. Means for solution: a medium composition for external fertilization which comprises as the essential components L-phenylalanine, L-tryptophan, L-lysine, L-threonine, L-valine, L-methionine, L-isoleucine, L-leucine, L-proline, glycine, L-alanine, L-tyrosine, L-histidine, L-arginine, L-taurine, L-aspartic acid, L-serine, L-asparagine, L-glutamic acid, L-glutamine and L-cystine.