<prompt> In breast lactiferous ducts are formed under the influence of which hormone?EstrogenProgesteroneLHFSH  <response>: Lactiferous ducts are one of the ducts, numbering 15-20, which drain the lobes of the mammary gland; they open at the nipple.Ref: Ganong;s review of medical physiology; 24th edition; page no: 416 