Nuclear Bodies: Their Prevalence, Location, and Ultrastructure in the Calf

Nuclear bodies, averaging 0.8 to 1.2� in diameter, were observed in various parenchymatous and interstitial cells of the calf. They were most prevalent and complex in structure in the parenchymatous cells of the adrenal cortex, and consisted of a fibrillar outer portion and a central or core area of varying size that was composed of electron-opaque particulate matter. These bodies, as far as the authors are aware, are of unknown significance.