MICHAEL ROSS / SCIENCE PHOTO LIBRARY MICHAEL ROSS / SCIENCE PHOTO LIBRARY
Light micrograph of the epiphysis, consisting of cartilage, of a medial phalangeal bone in a late foetus. At the top of the micrograph is a region showing the reserved cartilage. In the mid-region are the proliferating cartilage cells which appear in columns. Near the bottom of the micrograph are the hypertrophying cartilage cells and calcifying cartilage which appears as a somewhat darker blue. Mallory-Azan stain. Magnification: x175.
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