<http://schema.org/description>
"Progesterone is an essential part of fertility treatment. Progesterone prepares the lining of the uterus for implantation of a fertilized egg."^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.verywell.com/can-i-use-vaginal-progesterone-during-ivf-1124028>