OX6 positive ramified cells and round cells appeared in ischemic p enumbra (ramified) and core (round) at 3 day postischemia, and increased and pea ked in number at 1 week postischemia, and then declined gradually.

• OX6阳性细胞在半暗带区呈分支状 ,而在脑缺血中央区为圆形的阿米巴样细胞。 阳性细胞在脑缺血后 3d出现 ,脑缺血 1周时 ,其形态和数量变化最显著 ,并持续到脑缺血后 2周。