Assertion: estrogen | /r/HasProperty | synthetic hormone
Facets:
Source sentences:
text: MHT usually involves treatment with estrogen alone or estrogen plus progestin, a synthetic hormone whose effects are similar to those of progesterone.
text: It also has to do with the types of estrogens in your system, and whether they are your natural hormones or the synthetic xenoestrogens that exist in our environment.