differentiatedif·fer·en·ti·ate
[dif-uh-ren-shee-eyt] Show IPA verb (used with object), dif·fer·en·ti·at·ed, dif·fer·en·ti·at·ing.
1. to form or mark differently from other such things; distinguish.
2. to change; alter.
3. to perceive the difference in or between.
4. to make different by modification, as a biological species.
5. Mathematics . to obtain the differential or the derivative of.
If those 150 cells were not differentiated (different from each other) then they would never form the different parts of the body they would just keep replicating exact duplicates of themselves making an ever bigger ball of cells all the same as every other.
The will to live is evidence of life and by the time the new life reaches the womb a portion of the cells that new life has made are already tasked to seek implantation. And another set of those cells created by the new life are tasked with forming the protective water zone in which that new life will grow a body for life in the air world. THAT is astonishing differentiation, and at the earliest age this differentiating begins which is the signal that a new will to be has come into the spacetime realm we all inhabit with bodies.