Chicken Heart diagram chickscope.beckman.uiuc.edu/explore/ chickscope.beckman.uiuc.edu/explore/ Chicken Heart diagram chickscope.beckman.uiuc.edu Swinn-Hanlon, 1998 Swinn-Hanlon, 1998 Chicken Heart diagram embryology/day02/comparative.html embryology/day02/comparative.html Swinn-Hanlon, 1998 Chicken Heart diagram Swinn-Hanlon, 1998