Medical Illustration has been around a long time and for different reasons. Leonardo was doing it before photography just to record how things worked. I remember leafing through an anatomy book in grade school and was impressed by studies printed on clear acetate showing successive layers of human systems, derma, skeletal, circulatory etc. med Illustration is still used today to map out “or storyboard” a procedure as in the case of this beautiful rendering of internal info of co-joined twins for Mayo Clinic by Michael King. There is a lot more info at the Assn. of Medical Illustrators including info on training, certification and careers. Hey maybe this is a new direction for me.