Table 1. Effect of NT on cleavage rate and blastocyst formation rate in vitro.

Treatment	No. of oocytes	No. (%) of early cleavages	No. (%) of cleavages	No. (%) of blastocysts at day 7	No. (%) of blastocysts at day 8
control	104	38 a (36.5)	51 a (49.0)	16 (31.4)	22 (43.1)
NT	118	59 b (50.0)	76 b (64.4)	20 (26.3)	30 (39.5)

Values with different superscript letters are significantly different (a–b: P < 0.05), n = 3. Early cleavage rate, cleavage rate, blastocyst formation rate on day 7, and blastocyst formation rate on day 8 were assessed at 27 h, 72 h, 168 h, and 192 h, respectively, after IVF. Cleavage rates and blastocyst formation rates were based on the percentages of original oocyte number and cleaved oocyte number, respectively.