Read the full article on: 3 weeks pregnant – the start of the development of the embryo ( 36).
By Jon Ander Agirregoikoa M.D. (gynecologist), Marta Barranquero Gómez B.Sc., M.Sc. (embryologist), Zaira Salvador B.Sc., M.Sc. (embryologist) and Michelle Lorraine Embleton B.Sc. Ph.D. (biochemist).
Last Update: 02/06/2019