Activities of tyrosine, alanine and aspartate aminotransferases of fetal rat liver in organ culture.

The levels of tyrosine, aspartate and alanine aminotransferases of fetal rat liver were measured and compared with values reported in the literature. Incubation of explants of fetal liver in organ culture resulted in spontaneous increases in tyrosine and alanine aminotransferases, and decrease in aspartate aminotransferase.