Placental Lactogen/CSH1 Protein, exclusive to pregnancy, orchestrates lactation, fetal growth, and metabolism. Its unique mode of action involves zinc-induced dimerization of the Prolactin Receptor (PRLR), distinct from the Growth Hormone Receptor (GHR) . This specificity and structural versatility underline its pivotal role in intricate pregnancy-related processes and maternal physiology. Placental Lactogen/CSH1 Protein, Human (HEK293, His) is the recombinant human-derived Placental Lactogen/CSH1 protein, expressed by HEK293 , with C-6*His labeled tag.