File:Zygote.jpg

Zygotes showing different distribution of NPB in the 2PN and different PB aligment

Zygotes observed after 18-20 hours after insemination. (A) 2PN centralized and juxtaposed, NPBs aligned on the side of the 2PN, longitudinal PB alignment. (B) 2PN centralized and juxtaposed, NPBs dispersed in the 2PN, perpendicular PB alignment. (C) 2PN centralized and juxtaposed, NPBs non polarized with dispersed or not completely aligned NPBs in the 2PN, longitudinal PB alignment. (D) 2PN centralized and juxtaposed, NPBs aligned on the side of the 2PN, neither longitudinal nor perpendicular PB alignment. Black narrows indicate the PBs. (A) and (B) were examples of zygotes included in Pattern 1 group, while (C) and (D) were examples of zygotes included in Pattern 2 group.

Reference

<pubmed>20579351</pubmed>

Alessia Nicoli, Francesco Capodanno, Lucia Moscato, Ilaria Rondini, Maria T Villani, Antonella Tuzio, and Giovanni B La Sala Analysis of pronuclear zygote configurations in 459 clinical pregnancies obtained with assisted reproductive technique procedures Reprod Biol Endocrinol. 2010; 8: 77.

Copyright ©2010 Nicoli et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.