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  1. How much does the placenta and amniotic fluid weigh? - Answers

  2. Is placenta inside the sac - Answers

  3. What is a blood sack behind the placenta? - Answers

  4. What is the membrane that forms a sac around an animal embryo?

  5. Does 2 sacs and one placenta mean fraternal twins? - Answers

  6. What is a Yolk sac and is it different to amniotic sac? - Answers

  7. What is the name for the protective structure that forms ... - Answers

  8. What is the outer sac around the fetus? - Answers

  9. What is the fluid-filled sac surrounding the developing ... - Answers

  10. Why would you have two amniotic sacs? - Answers