B7 transfected CHO cells were used as artificial antigen presentation cells (APCs) in MLR to exclude the effects of other costimulatory molecules.

• 为了排除其它粘附分子的作用 ,应用联合转染DR7或 (和 )B7分子基因的CHO细胞系作为人工抗原递呈细胞 (APC)介导混合淋巴细胞反应 (MLR)。