immunocytochemistry for the general neuronal marker protein gene product 9.5 and four neuropeptides ( calcitonin gene-related peptide , substance p , vasoactive intestinal polypeptide and neuropeptide y ) was performed on 20 skin biopsy specimens from 19 diabetic patients , age range 20-75 years , 17 type 2 ( non-insulin-dependent ) and 3 type 1 ( insulin-dependent ) .
C0027895
neuropeptides
C0027893
neuropeptide y