Table I.
Stage of development | Elastic modulus of ZP (kPa) | Sample size (n) |
---|---|---|
Germinal vesicle | 22.8 ± 10.4 | 30 |
Metaphase-II | 8.26 ± 5.22 | 74 |
Pronuclear | 22.3 ± 10.5 | 66 |
2-cell | 13.8 ± 3.54 | 41 |
4-cell | 12.6 ± 3.34 | 19 |
8-cell | 5.97 ± 4.97 | 6 |
Morulae | 1.88 ± 1.34 | 8 |
Early blastocyst | 3.39 ± 1.86 | 4 |
ZP, zona pellucida.
Values were recorded from a microtactile sensor experiment performed by Murayama et al (2006).