Kröger H, Grätz R
Int J Biochem. 1984;16(6):703-5. doi: 10.1016/0020-711x(84)90043-0.
The induction of the tyrosine aminotransferase by tyrosine and by tryptophan + methionine is completely inhibited by 375 mg/kg D-galactosamine-HCl. The hydrocortisone induction is reduced in dependence on the amount of D-galactosamine. Tryptophan protects to some extent the influence of low doses of D-galactosamine on the hydrocortisone induction of tyrosine aminotransferase.