Fig. 5.

Photomicrographs showing portions of capsules adjacent to the opening of the tubes implanted in the subcutaneous for 7 (A, C, E, G, I) and 60 days (B, D, F, H, J). A–F Sections submitted to the von Kossa reaction and counterstained with picrosirius-red. von Kossa-positive structures (black colour) are observed dispersed in the capsules of BIO (A, B) and CAL (C, D) specimens. In (E, F), no positive structures are observed in CG. Figure 5G–J Photomicrographs showing unstained sections analyzed under polarized light. Note the presence of birefringent structures in the BIO and CAL groups at 7 and 60 days. Bars: 52 μm