Comparative analysis showed that the homologies of the nucleotide sequence and amonia acid sequence of DRB3 gene between Beijing Holstein cow and Mongolian, Human, Swedish Red and White breed, Mongolian Sheep and Spanish goat are high.

• 北京荷斯坦牛DRB3基因核昔酸序列以及氨基酸序列与蒙古牛、人类HLA·DRB3、瑞典红白花牛、蒙古绵羊、西班牙山羊之间的DRB3基因核昔酸序列同源性以及氨基酸序列同源性均比较高。