Fig. 3. (A) Fluorescence photomicrographs of the endocortical surface of a right (loaded in bending) and left (nonloaded control) tibia from an animal in the 14 s recovery group. Sparse single and double labeling is present in the control limb, but the loaded limb shows long stretches of well-separated double labeling, particularly on the medial and lateral surfaces where strains were greatest. A, anterior; L, lateral; M, medial; P, posterior. (B) Higher-power photomicrographs of the boxed area from the loaded limb in A. The left and right panels illustrate the same field under polarized white light (left panel) and fluorescence (right panel). Taken together, the photomicrographs show that the bone formed during the experiment, i.e. the bone between labels, exhibits lamellar organization.
