How to pronounce “blastocyst” in English

And imagine trying to understand what would this blastocyst, this embryo become.

I'm going to put some identifying features on the blastocyst.

And we've just discovered this parasite called Blastocystits, which is in 25% of the UK population,

And if you want to extrapolate back to what he was as a blastocyst, that's a factor of 2 million.