RedTracker| Mother Nature has thrown scientists a big curve ball, overturning conventional wisdom that the core female sex hormone progesterone secreted by women in their ovaries didn’t exist in plants. A synthetic version of progesterone exists in birth control pills and also hormone replacement therapy.
Guido F. Pauli and colleagues used two powerful laboratory techniques, nuclear magnetic resonance and mass spectroscopy, to detect progesterone in leaves of the Common Walnut, or English Walnut, tree. They also identified five new progesterone-related steroids in a plant belonging to the buttercup family. via Science Daily