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Friday, May 1, 2009
Refresh my Biology...
Timeline of human foetal development
Day 1 : fertilisation
Day 6-9 : implantation into mother's uterus
Week 2 : 3 layers of cells - ectoderm, mesoderm and endoderm are formed
Week 3 : rudimentary heart beating
Week 8 : unborn embryo called a foetus
Week 19 : minimum age for a baby to be born and survive
Week 38 : baby ready to be born, lungs are fully functional
Friday, May 01, 2009
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