This moment of zygote formation may be taken as the beginning or zero time point of embryonic development. The term is not used in this book. I knew what I was looking at. I checked it out and there were two arms and two legs and one head, etc. This is why abortion advocates oppose any attempts to provide women with scientific, unbiased information on fetal development.
Ignorance is bliss.
Feticide is legal. Larsen, W.J. 1998. Essentials of Human Embryology , Churchill Livingstone, New York. O'Rahilly, R. and F. Muller. This is a drug that is used for cancer treatment, it stops cell growth.