An emergency room of a big city hospital like the Mass General is a wild place. And it’s all comers — medicine, surgery — whatever is coming through the door, you’re responsible for triaging it or taking care of it yourself. And it’s 12 hours on, 12 hours off. And after seven cycles of that, one 24-period off — 24-hour! And it was really intense. And you know, I loved clinical medicine. I was good at it. I enjoyed it, but boy did I miss the lab. And it wasn’t so much doing the experiments with my own hands that I missed. It was the idea of having data, having something to really chew on and analyze. This was just boom, boom, boom, boom. Almost like on a battlefield. And I really missed the research. And so ironically, the entire second six months of the residency year was elective. And you have to do clinical work, because you were paid with hospital dollars. So, in contravention of the rules, I actually went into somebody’s laboratory. The irony there was, all through medical school, I turned down research electives. And now in a situation where I couldn’t legally do them, I did it anyway. I really had to get back to the laboratory. That’s really when my research career really began to take shape. Although I was at that point by no means committed to a research career at all. In fact, several years later, when I took up my first — and as it turns out, only — faculty position at Duke in 1973, I would say at the beginning, I was probably spending about 50 percent of my time doing clinical work, doctoring, and 50 percent of the time setting up a laboratory. But that changed quickly over the next few years.