Dear Lactnet Friends: Kika's lovely question has sent me searching. Look at this interesting study: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3045478/ " Prolactin (Prl) and progesterone (P) cooperate synergistically during mammary gland development and tumorigenesis. We hypothesized that one mechanism for these effects may be through mutual induction of receptors (R) " warmly, -- Nikki Lee RN, BSN, Mother of 2, MS, IBCLC, CCE, CIMI, ANLC, CKC Reviews Editor,* Clinical Lactation* www.nikkileehealth.com https://www.facebook.com/nikkileehealth *Communications are confidential and meant only for whom they are addressed.* *********************************************** Archives: http://community.lsoft.com/archives/LACTNET.html To reach list owners: [log in to unmask] Mail all list management commands to: [log in to unmask] COMMANDS: 1. To temporarily stop your subscription write in the body of an email: set lactnet nomail 2. To start it again: set lactnet mail 3. To unsubscribe: unsubscribe lactnet 4. To get a comprehensive list of rules and directions: get lactnet welcome