progesterone secretion
The regulated release of progesterone, a steroid hormone, by the corpus luteum of the ovary and by the placenta.
GO:0022412
cellular process involved in reproduction in multicellular organism
is_a
GO:0022602
ovulation cycle process
is_a
GO:0035929
steroid hormone secretion
is_a
GO:0001553
luteinization
part_of