PMC7154056_01
Morphology of round-headed sperm and the blastocysts. (a) shows small round-headed sperm. (b) shows a Day 5 good blastocyst with normal chromosome number (46, XX); while (c) shows a Day 6 aneuploid blastocyst. Both blastocysts were resulting from the oocytes activated by calcium ionophore after round-headed sperm injection.
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PMC7154056_01_fendo-11-00183-g001.jpg
F1
All fertilized oocytes cleaved at Day 3 examination, and 2 developed to blastocysts (Figures 1b,c). As results, one euploid (46, XX) blastocyst with good inner cell mass (ICM)/good trophectoderm (TE) (Figure 1b) and one aneuploid blastocyst [45, X, dup(Y) (p11.2p11.2), del (1) (q31)] with fair ICM/good TE (Figure 1c) were obtained from the oocytes injected with round-headed sperm and activated by ionophore.