THE UNIVERSITY OF MANITOBA STUDIES ON OVINE PLACINTAL ...

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Figure 15a. Displacement curve for opL, hGH, opRL, hpl, and oGH in
the rad i oreceptoras say for prolactln(RRA_PRL) using rabblt mammary
gland. Rabbit manrnary gland receptors were incubated with l2sl-opnL
in the presence of increasing concentratior6 sf ncold,, hormone. The
ordinate represents the l25t-opRL bound to prolactin binding sites.
In the absence of any added honnone, the amount bound is taken to
be ì00%. In the presence of oPRL, opl, hGH, and hpL, the % of l25t_opRt
bound is decreased. The absclssa represents the concentrôfion of
hormone added to the assay tube.