Fig. 4From: Correction osteotomy for bilateral varus knee deformity caused by premature epiphyseal closure induced by hypervitaminosis A: a case reportHistopathological findings of distal femoral growth plate cartilage. a Hematoxylin and eosin staining (HE) shows polar irregularity. b Safranin-O staining (Saf-O) shows decreased cartilage matrix. c TUNEL-stained section shows no obvious apoptosis in the growth plate cartilage. Original magnification: × 100 for A and B, × 400 for CBack to article page