No longer considered functionless, the “rediscovered” rete ovarii may be crucial for understanding “unexplainable” infertility and ovarian disorders.

It begins when a pollen grain that carries the sperm cells lands on the top of the pistil, the female reproductive structure of a flower. The pollen grain then germinates into a tube that guides the ...

Despite the plant’s status as a well-known Japanese orchid, the function of this structure had remained ... into the stigma ...