Across
- 2. Substance that harms the foetus
- 3. Product of gastrulation
- 4. A fertilised egg
- 5. A cell that can differentiate into anything
- 7. Induces thickening of overlying ectoderm
- 9. A fluid-filled morula
Down
- 1. Trophoblast penetrating endometrium
- 6. Prone to many, many defects
- 8. A cluster of 12-16 cells formed from a zygote