Vital Staining of Newly Formed Areas of Compact Bone with Chlorazol Fast Pink

The dense connective tissues of the mouse and cat are selectively stained following the vital introduction of chlorazol fast pink. In addition, the newly formed areas of bone and of cartilage are intensely stained, while other areas of these two tissues are unstained. The staining reactions of this dye parallel that of trypan blue, vitally as well as in vitro.