1.13.11.19 down expression is downregulated by methionine, cysteine, and 0.5% taurine 764007 1.13.11.19 additional information addition of taurine to cells grown in taurine-free medium has little effect on transcript levels of the biosynthetic pathway genes for cysteine dioxygenase (CDO), cysteine sulfinate decarboxylase (CSAD), or cysteamine dioxygenase (ADO). In contrast, supplementation with taurine causes a 30% reduction in transcript levels of the taurine transporter, TauT -, 743204 1.13.11.19 up expression is upregulated by 1.5% cysteamine. Feeding diets supplemented by 1-1.5% cysteamine reduces survival rates and feed conversion ratio and causes body deformity with reduced dorsal muscle mass in common carp 764007