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. Author manuscript; available in PMC: 2009 May 1.
Published in final edited form as: Front Neuroendocrinol. 2008 Feb 1;29(2):292–312. doi: 10.1016/j.yfrne.2008.01.001

Figure 2.

Figure 2

Competition curves of steroid binding to plasma membranes of MDA-MB-231 (PR-) cells stably transfected with (A) human mPRα, (B) seatrout mPRα, (C) zebrafish mPRα, expressed as a percentage of maximum [3 H]progestin binding (A: [3 H]P4; B:[3 H]20β-S; C: [3 H]17α,20β-P). P4, progesterone; 20β-S, 17,20β,21-trihydroxy-4-pregnen-3-one; 17α,20β-P, 17,20β-dihydroxy-4-pregnen-3-one; RU486, mifepristone; R5020, promegestone; cort, cortisol; E2, estradiol-17β; T, testosterone. (A and B reproduced from Thomas et al., 2007 [122], C reproduced from Hanna et al., 2005 [37] with permission).