Milked by my Lab Partners (MFM Lactation Erotica)

Mara, along with her lab partners, Pete and Nathan, are on the verge of an incredible advancement in breast cancer research: they have created a serum that could vaccinate women by stimulating certain lactation functions in the breasts. But when Mara accidentally gets some of the concentrated serum on her skin, she discovers that their serum might be more potent than they’d thought.