This is a vector illustration showing the physiological relationship between the thyroid gland, the pituitary gland, the hypothalamus, and the body’s peripheral tissues. I did it for an endocrinology journal around 1995, with a pretty early version of Adobe Illustrator, probably 5.0? (That’s 5.0, not CS5!) This illustration had to be done with a vector application because I used the pieces to animate it later. Today this kind of animation might be done with Flash, but back then I used an application called Director. I remember having to learn Director on the spot when a client before this one asked if I could animate one of my illustrations. I said “Yes!” knowing full well I’d have to learn Director that night. Talk about living by the seat of my pants. Well, it worked. I learned it very quickly (and frantically). I’d like to post my old animations some time, if I can figure out how to get them off the Syquest disks.