... and mouse the NICN1 gene is immediately followed by the AMT gene for aminomethyltransferase, an enzyme of glycine meta-bolism [4,11]. The promoters of the canine and murineNICN1 genes lack ... approxi-mately 2.5 and 2.3 kb, respectively. The size of the murinetranscript is in good agreement with our murine genomicdata, which allow the calculation of a cDNA size of 2133 ntwithout the poly(A) ... detailedanalysis of the expression of the Nicn1 gene at days 8.5, 9.5,and 10.5 of murine development was performed by in situhybridization of digoxigenin-labeled riboprobes to whole-mount mouse embryos....