1. Human blastocyst morphological quality is significantly improved in embryos classified as fast on day 3 (≥10 cells), bringing into question current embryological dogma 
Martha Luna, M.D., Alan B. Copperman, M.D., Marlena Duke, M.Sc., Diego Ezcurra, D.V.M., Benjamin Sandler, M.D., Jason Barritt, Ph.D. 
Fertility and Sterility 
Volume 89, Issue 2, Pages (February 2008)
DOI: /j.fertnstert
Copyright © 2008 American Society for Reproductive Medicine Terms and Conditions

2. Figure 1
Blastocyst expansion grade classified according to embryo cell number on day 3 of culture.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2008 American Society for Reproductive Medicine Terms and Conditions

3. Figure 2
Blastocyst inner cell mass (ICM) grading classified according to day 3 embryo cell number.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2008 American Society for Reproductive Medicine Terms and Conditions

4. Figure 3
Blastocyst trophectoderm grade classified according to day 3 embryo cleavage group.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2008 American Society for Reproductive Medicine Terms and Conditions