Table 2. Mouse embryo development after 120 hours of culture.
Variable Control (n=300) 50% HSF (n=320) 100% HSF (n=400) p*
Early blastocyst 25 (8.3) 14 (4.4) 20 (5.0) 0.085
Partial blastocyst 57 (19.0) 55 (17.2) 57 (14.3) 0.446
Full blastocyst 0 0 0 -
Expanding blastocyst 4 (1.3) 5 (1.6) 4 (1.0) 0.871
Hatching blastocyst 61 (20.3) 80 (25.0) 93 (23.3) 0.170
Hatched blastocyst 22 (7.3) 28 (8.8) 32 (8.0) 0.755

Values are presented as number (%)
* Chi-square test