单项选择题
A.1,25-(OH)2-D3B.25-(OH)2-D2C.25-(OH)-D3D.1,25-(OH)2-D2E.1,24-(OH)2-D3
A.蛋白质B.糖原C.甘油三酯D.胆固醇E.磷脂
A.UTPB.UDPC.G-1-PD.UDPGE.UDPGA