White blood count and differentiation 白细胞数及分类 s White blood cells count is higher at birth: 15 20×109L 初生时白细胞总数较高15-20×109 Average of 12 x 10/Lat 1 week of age 一周时平均为12×109/L Maintain at 10 x 10/Lin infancy and young children 婴幼儿维持在10×109L *e approximate 4-10 x 10/L of the adult level after 8 years of age 8岁后接近成人4-10×109/L (國)复旦大学上海医学院儿科学系• White blood count and differentiation • 白细胞数及分类 * White blood cells count is higher at birth:15－ 20×109 /L 初生时白细胞总数较高15－20×109 /L * Average of 12×109 /L at 1 week of age 一周时平均为12×109/L * Maintain at 10×109 /L in infancy and young children 婴幼儿维持在10×109/L * Approximate 4－10×109 /L of the adult level after 8 years of age 8岁后接近成人4－10×109/L