Methods The action of VEGF in the rat brain was determined by using ultraviolet spectrophotometry to examine Evans blue staining after injection of VEGF into rat lateral ventricle or into femoral artery.

• 方法 动脉及侧脑室注射VEGF后 ,再注射伊文思兰 ,用分光光度法测脑内伊文思兰染色程度来反映VEGF的血管通透作用。