Gabriela Olech-Kochańczyk is a Ph.D. student at the Nencki Institute of Experimental Biology, Polish Academy of Sciences in Warsaw, Poland. She graduated from the Jagiellonian University in Krakow, Poland (Faculty of Biochemistry, Biophysics and Biotechnology). Gabriela's primary research objective is elucidation of the role of PML in the adult mouse brain. In her experiments, she applies many transgenic techniques such as injections of viral suspension into perivitelline space, injections of DNA into pronuclei, and injections of embryonic stem cells into blastocyst.