EagleBio’s Intact FGF-21 was recently utilized in this Boston Study at Tufts University:
Human FGF-21 Is a Substrate of Fibroblast Activation Protein
FGF-21 is a key regulator of metabolism and potential
drug candidate for the treatment of type II diabetes and other metabolic
disorders. However, the half-life of active, circulating, human FGF-21 has
recently been shown to be limited in mice and monkeys by a proteolytic cleavage
between P171 and S172. Read More
Source: https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0151269