1.2.1.36 retinal dehydrogenase exocrine acinar cell pancreas exocrine acini 2.4.1.255 protein O-GlcNAc transferase exocrine acinar cell - 3.4.14.5 dipeptidyl-peptidase IV exocrine acinar cell - 3.6.1.2 trimetaphosphatase exocrine acinar cell -