胍基固载量的提高可以增加吸附剂对胆红素的吸附性能.The increase of the guanidine amount can improve the adsorption performance.对于α-氨基仍采用Fmoc保护策略, 侧链氨基用二碳酸二叔丁酯引入叔丁氧羰基来保护,侧链胍基用酸敏感保护基2,2, 4,6,7-五甲基二氢苯并呋喃-5-磺酰基来保护.Fmoc, Boc and Pbf were used respecti...
The function of the thymus was unknown until relatively recently.直到不久以前,人们对胸腺的功能尚不明了.In children under the age of two years the thymus often obscures the upper cardvovascular borders.两岁以下的儿童胸腺常常遮盖上部分心血管边缘.Conclusion: Pol...