The inclusion of blastomeres into the inner cell mass in early-stage human embryos depends on the sequence of cell cleavages during the fourth division
Fig 2
Dendrogram and the average order in which the cells cleaved during the 3rd and 4th divisions in each cluster.
The dendrogram revealed that samples can be divided into two clusters, according to the order of cell division. Cluster analysis showed that blastomeres which cleaved earlier tended to reach the ICM.