B-**细胞激活抗原B7-2(LAB7-2)重组蛋白图片

p1Src=//y3.yzimgs.com/uploads/495139/201645-16135224.jpg?watermark/2/text/5LiK5rW35bq35pyX55Sf54mp56eR5oqA5pyJ6ZmQ5YWs5Y-4/font/5a6L5L2T/fontsize/300/fill/I0E3QTlBOA==/gravity/SouthEast"