Fig. 4
From: Co-expression of 1α-hydroxylase and vitamin D receptor in human articular chondrocytes
Cultured chondrocytes labelled with VDR antibody (b and d) and merged image of DAPI and VDR labelling (a and c). Cells in a and b are untreated, while c and d are treated with 1α,25(OH)2D3 for 2 h. Cultured chondrocytes treated with 50, 250 or 500 nM 25(OH)D3 for 24 h compared to level of 1α,25(OH)2D3 measured in the supernatant (e), results represent the experiment on cells from one donor