<正>Materials and Methods:This study was conducted to investigate the dynamic distribution and possible roles of Polo-like 1 kinase(Plk1)during the first mitosis process in early porcine embryo development.Indirect immunofluorescence and confocal microscopic imaging technique combined with western blot were used to study the dynamic expression and subcellular localization of the Plk1 protein.Finally,a selective Plk1 inhibitor GSK461364 was used to evaluate the potential roles of Plk1 during this special