1. 受精卵：[造血干细胞和造血] 干细胞(stem cell)根据其分化潜能可分为全能(totipotent)干细胞,即受精卵( fertilized egg亚全能(pluripotent)干细胞,即胚胎(embryo)干细胞;胚胎干细胞继续分化,形成组织定向的多能(multipotent)干细胞.

2. 孕囊：卵泡 follicle | 孕囊 fertilized egg | 囊肿 cyst;hydatidoma;hydatoncus

3. 受精卵,孕卵：fertilize == 肥料をやる | fertilized egg == 受精卵,孕卵 | fertilized egg cell == 受精卵细胞

4. 受精蛔虫卵：ascariasis 蛔虫病 | fertilized egg 受精蛔虫卵 | unfertilized egg 未受精蛔虫卵

noun

1. an animal organism in the early stages of growth and differentiation that in higher forms merge into fetal stages but in lower forms terminate in commencement of larval life

Synonym: embryoconceptus