TY - RPRT TI - Morphologic changes in annulus fibrosus during aging. An ultrastructural study in rats. AU - F Postacchini AU - M Bellocci AU - M Massobrio PY - 1984 DO - 10.1097/00007632-198409000-00010 UR - https://pubmed.ncbi.nlm.nih.gov/6495029/ ID - 6495029 ER -