Fig. (5) Electron microscopic radioautogram of the adrenal
medullary tissues of a newborn mouse at postnatal day 3, labeled
with 3H-thymidine, showing DNA synthesis (several silver grains)
in the nuclei as well as in a few mitochondria of 4 noradenalin cells.
x 3,000. (From Nagata [49].
Courtesy of J Cell Tiss Res 9: 1793-1802, 2009).