Methods The concentrations of 2,3 DPG,ATP and hemoglobin and pH value in a given stored blood were determined on the days 1,4,7,10,14,28,35 and 42 after collection respectively and the preservative effect of different medium was evaluated.

• 方法 同一血源于采血的当日及 4d、7d、1 0d、1 4d、2 1d、2 8d、35d、4 2d分别测定 2 ,3 DPG、ATP、Hb和 pH值 ,观察不同保养液对血中 2 ,3 DPG和ATP的保存效果。