Yang L, Kuo CB, Liu Y, Coss D, Xu X, Chen C, Oster-Granite ML, and Walker AM. Administration of unmodified prolactin (U-PRL) and a molecular mimic of phosphorylated prolactin (PP-PRL) during rat pregnancy provides evidence that the U-PRL:PP-PRL ratio is crucial to the normal development of pup tissues. J Endocrinol. 2001, 168(2): 227-238. doi: 10.1677/joe.0.1680227. [Journal of Endocrinology PDF]
