two binding proteins were detected : one sedimenting at 5-6 s representing binding of 1,25- ( oh ) 2d3 to the 25 hydroxyvitamin d3 ( 25ohd3 ) binding protein and a second moiety sedimenting , like the rat intestinal receptor , at 3.3 s .
C0006657
25 hydroxyvitamin d3
C2713074
25ohd3