Según el artículo de IVF.Explained publicado en @IVF_Explained el 31/01/2018 y divulgado en OKILAB

The 4 stages of a Day 5 Embryo at the same time

A little treat today with 4 embryos of the SAME patient at the SAME time yet all 4 at DIFFERENT stages of development.
Its not often i see this and its a great example that embryos move on their own timeline. This pic is taken just over 120 hrs post ICSI so i want to see a Blast ie 3Aa. Thats not to say the others are ahead or behind but there is some development difference between a morula and an Expanding Blast 4Aa. I would hope to see the early blast and morula move on tom (d6) but the other 2 have been biopsied and cryo today.
Just remember that some embryos need a bit more time. I checked these at 7am this morning and i only saw an early blast and 3 late morulas. I look 6 hrs later and now i have 3 that have moved on considerably.
Sometimes you just have to be a little patient 😉