in situ hybridization on sections of foetal adrenals revealed that at 110-140 days gestation proenk a mrna was expressed in chromaffin cells at the outer margin of the adrenal medulla but at earlier stages of gestation ( e.g . 95 days ) appeared to be expressed homogeneously throughout the whole of the adrenal medulla .
C0001625
adrenals
C0001629
adrenal