Albrieux has reported that the blood cells of nonpregnant women contained at least twice as much estrogenic activity as the blood serum, while during pregnancy the estrogenic activity was equally distributed between cells and serum (1, 2); however, the specificity of the assay used in these studies is questionable.
No takes yet. Share an insight, caveat, or question.
Wall et al. (1959) studied this question.
Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context: