Os penis of the rat. VI. Scanning electron microscopy of the surfaces of the mature bone.

Observations on the ultrastructural appearance of the surfaces of the mature os penis in the rat reveal that a majority of its surfaces may be classified as prolonged resting surfaces on very slow growing surfaces. Although a vast majority of the bone consists of bone tissue types which usually only form a small part of human and laboratory animal bones, their surface appearances resemble to a high degree surface appearances described for ordinary bone tissue types. Thus, surface morphology need not reflect tissue type variance.