Trefil, Pavel;Aumann, Dorothea;Koslová, Anna;Mucksová, Jitka;Benešová, Barbora;Kalina, Jiří;Wurmser, Christine;Fries, Ruedi;Elleder, Daniel;Schusser, Benjamin;Hejnar, Jiří Male fertility restored by transplanting primordial germ cells into testes: a new way towards efficient transgenesis in chicken Scientific Reports 2017 7 1