Movie Theater
Human Development
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Script: 從生物學角度看， "人類發育始於受精"， 即一個女人和一個男人 通過生殖細胞的聯合， 把各自的23個染色體相結合。 | ||
| All ages referenced to fertilization, not last menstrual period. |
Amnion and Germ Layers
Early Embryonic Development
Human Development
Heart and Circulatory System
The Folding of the Embryo
The Folding of the Embryo
