The expression levels of CD80,CD83 and CD1a on DC surface between dead patients and control group were significantly different except CD86.The expression of CD1a,CD80,CD83 and CD86 between live patients and control group had no difference.

• 除CD86外；老年死亡组与对照组比较CD80、CD83和CD1a均下降明显；其中CD1a在组间比较P<0.；05；CD80、CD83在组间比较P<0