R. Bellairs, Wellcome Images
HomeImage of the DayImage of the DayThe skeleton of this 13-day-old chick embryo has been stained to highlight cartilage (blue) and bone (red).The Scientist StaffJan 4, 2013R. Bellairs, Wellcome Images
R. Bellairs, Wellcome Images 
R. Bellairs, Wellcome Images 
