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Fig. 4. Chondrogenic nodules isolated from EBs showed expression of marker proteins
characteristic for mature and hypertrophic cartilage. Nodules were cut from
5+16 d EBs, and 10 µm cryosections were analyzed by immunostaining for
collagen II (A), osteopontin (B), bone sialoprotein I + II (C) and collagen X
(D). Interference contrast microscopy pictures (E-H) demonstrate the typical
round-shaped morphology of chondrocytes. Bar, 100 µm.
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