| Type | MGI:General | Description | at E18.5, a small number of tyrosine hydroxylase (TH)-expressing chromaffin cells are scattered among the enlarged cells of the cortex instead of in the medulla these cells do not express phenylethanolamine N-methyltransferase (PNMT) suggesting that these are noradrenergic chromaffin cells at E13.5 and E15.5, a greatly reduced number of chromaffin cells are present in adrenal glands in mutant embryos |
