After a day or so, these nascent embryos are carefully examined in an effort to distinguish between any that are defective and those that seem to be healthy and most likely to implant and develop.
Päeva või paari pärast uuritakse vastseid embrüoid hoolsalt, et eraldada defektsed nendest, mis paistavad olevat terved ning võimelised pesastuma ja edasi arenema.