Blastocyst and cultured stem cells: University of Wisconsin Communications; all other art: © 2001 Terese Winslow, assisted by Lydia Kibiuk and Caitlin Duckwall
Blastotsüst ja kasvatatud tüvirakud: University of Wisconsin Communications; teised joonistused: © 2001 Terese Winslow, assisted by Lydia Kibiuk and Caitlin Duckwall