2.1.1.2	guanidinoacetate N-methyltransferase	hepatic primordium	in embryos at 12.5 days of gestation guanidinoacetate N-methyltransferase is detectable in the hepatic primordium only, with all other tissues being negative. Non-radioactive in situ hybridization (58°C for 40 h in 5 x SSC, 50% formamide and 40 microg/ml salmon sperm DNA) with digoxigenin-labeled antisense and sense riboprobes (400 ng/ml) for rat guanidinoacetate N-methyltransferase. guanidinoacetate N-methyltransferase proteins are detected with rabbit polyclonal antibodies	672798