Reduced-folate carrier (RFC) is expressed in placenta and yolk sac, as well as in cells of the developing forebrain, hindbrain, neural tube, craniofacial region, eye, limb buds and heart

还原型叶酸载体（RFC）在胎盘和卵黄囊中表达，也在发育中的前脑、后脑、神经管、颅面区域、眼睛、肢芽和心脏的细胞中表达。