Answer: Before about week 8 of pregnancy, a doctor may refer to the fetus as an embryo. The heart of an embryo starts to beat from around 5–6 weeks of pregnancy. Also, it may be possible to see the first visible sign of the embryo, known as the fetal pole, at this stage.
Maybe you should tell him to go to a doctor or tell him to see a Psychiatrist.
A good ratio of carbohydrates, fats, and proteins respectively is :
- 30 protein,
- 30 carb,
- 40 fat
Differentiation is the process of going from a stem cell to a differentiated, specialized cell.
