The best way to define blastocyst

A blastocyst is a fertilized egg that has developed for 5-6 days and contains 3 distinct features including a fluid-filled cavity trophectoderm/trophoblast (T) cells, and an inner cell mass (ICM). A blastocyst may also be referred to as a Day 5,6 or 7 embryo.

Explanation:

A blastocyst is a fertilized egg that has developed for 5-6 days and contains 3 distinct features including a fluid-filled cavity trophectoderm/trophoblast (T) cells, and an inner cell mass (ICM). A blastocyst may also be referred to as a Day 5,6 or 7 embryo.

links? do you have a link? i don't see anything?

answer an inhibitory neurotransmitter in the brain;