My old laboratory in the Department of Physiology at Baylor College of Medicine (1973). My wife Nilda, Dr. Hoff and Max in front of the three-channel Physiograph (ink recorder) I had. Experiments were run routinely every week for medical and graduate students in the general lab (not this one), where there were several stations, each equipped with the same kind of recorder. Respect and affection to animals was always underlined and practiced. Often, Dr. Hoff said: "Never make an incision longer than you actually need, and do not forget to keep a clean surgical area. That too must have an aesthetic content."