Starreveld, J.S.

transferrin ferritin receptor culture medium protein placenta figure number synthesis cytotrophoblast iron uptake uptake binding transferrin receptor culture medium surface placental transport trophoblast concentration ferritin synthesis regulation effect experiment chapter result control mechanism transferrin receptors syncytiotrophoblast study v eijk hg serum process method series differentiation membrane tfr synthesis transplacental iron transport surface tfr numbers expression syncytium tfr numbers change biochem material intracellular level iron metabolism control medium sample function cycle structure transfer increase subunit pregnancy procedure metabolism difference saturation degradation amount blood factor guinea pig desferrioxamine transplacental isolation ratio growth endocytosi content determination kroos mj internalization fetus