receptors for 1,25- ( oh ) 2d were assessed by three methods : high affinity uptake of hormone in nuclei of dispersed cells , high affinity binding in hypertonic extracts ( herein termed cytosol ) from cells , and sedimentation velocity of bound [ 3h ] 1,25- ( oh ) 2d3 in extracts of cell nuclei .
C0007634
cells
C0007610
of cell nuclei