1α,25-Dihydroxyvitamin D3 and 24R,25-Dihydroxyvitamin D3 Modulate Growth Plate Chondrocyte Physiology via Protein Kinase C-Dependent Phosphorylation of Extracellular Signal-Regulated Kinase 1/2 Mitogen-Activated Protein KinaseZvi Schwartz, Barbara D. Boyan, Victor L. Sylvia et al.|Endocrinology|2002Cited by 80