Which stage of lactogenesis is marked as the onset of copious milk secretion?

Question

Quizplus · Accepted Answer

Lactogenesis II, which occurs 2-5 days after birth, is marked as the onset of copious milk secretion. Lactogenesis I is the initial stage of milk production, occurring during pregnancy, but does not result in significant milk secretion. Lactogenesis III is the stage where milk composition changes to mature milk, and lactogenesis IV and V are not established stages of lactation.

Which Stage of Lactogenesis Is Marked as the Onset of Copious