. 2013 Aug 22;59(6):549–556. doi: 10.1262/jrd.2013-042

Table 2. Fertilization and pronucleus formation in oocytes* reconstructed from brownish (B) and transparent (T) fragments after in vitro fertilization.

Group of oocytes reconstructed	Number of reconstructed oocytes	Number (%) of oocytes penetrated	Number (%) of oocytes with MPN formation
B oocyte	72	69 (95.8 ± 2.2)^a	65 (94.2 ± 3.8)^a
T oocyte	24	16 (66.7 ± 20.4)^b	8 (50.0 ± 19.1)^b

* Reconstruction of oocytes was carried out with one karyoplast and two cytoplasts for each of the B and T fragments (B and T oocytes). MPN: male pronucleus, defined by the presence of a sperm tail located nearby. In each row, data with different superscripts are significantly different (P<0.05).