短语词组短语gap junction gene connexin 缝隙连接蛋白cxgap junction protein connexin 缝隙连接蛋白cxgap junction protein connexin 43 间隙连接蛋白gap junction gene connexin 43 缝隙连接蛋白cxconnexin gap junction protein 连接蛋白cx 返回 gap junction connexin