Fig. 3From: Co-expression of 1α-hydroxylase and vitamin D receptor in human articular chondrocytesSubcellular distribution of VDR (a) and 1α-hydroxylase (b) in chondrocytes assessed by immunoelectron microscopy. Panels c and d are magnifications of a and b respectively. Gold particles are marked with arrowheads. N = nucleus, M = mitochondria, PM = plasma membrane, CP = cytoplasmBack to article page