CeruloplasminĀ (orĀ caeruloplasmin) is aĀ ferroxidaseĀ enzymeĀ that in humans is encoded by theĀ CPĀ gene. Ceruloplasmin is the majorĀ copper-carrying protein in the blood, and in addition plays a role inĀ iron metabolism. It was first described in 1948. Another protein,Ā hephaestin, is noted for it

FollistatinĀ also known asĀ activin-binding proteinĀ is aĀ proteinĀ that in humans is encoded by theĀ FSTĀ gene.Ā Follistatin is anĀ autocrineĀ glycoproteinĀ that is expressed in nearly all tissues of higher animals. Its primary function is the binding and bioneutralization of members of the TG