Differential Staining of Calcified Tissues in Plastic Embedded Microtome Sections by A Modification of Movat's Pentachrome Stain

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Abstract
Movat's pentachrome I stain has been adapted and modified as a stain for Undecalcified bone sections. After embedding in methyl methacrylate, this procedure yields consistently good results, with an excellent and colorful contrast between mineralized and unmineralized compartments of both cartilage and bone. in addition, osteoblats, osteoclasts, and other cells and tissue components can easily be differentiated. the staining properties of the lacunar wall surrounding the osteocytes are considered to reflect various states of osteocytic activity. the method is especially useful for the study of bone growth and bone repair, and as a stain for conventional histomorphometry and computer-assisted image analysis in bone biopsies.