Fig. 6.

Transversal sections from the proximal femur (all sections 11 mm distal from femoral head, subtrochanteric region) of OVX rats treated with PTH and E for 5 weeks and sham group. The sections were studied by fluorescence microscopy. In the sham group, only a minimal periosteal and endosteal bone formation could be observed. In the OVX group, there was no endosteal but a clear periosteal activity (B). The E-treated animals showed very weak periosteal and endosteal appositions (C). In contrast, PTH seems to induce both endosteal and periosteal bone formation (D). Please note the changes between the groups concerning bone geometry and the width of bone marrow (Ma.Dm) in the upper pictures