Well, in the meantime, a man called Scott... at Lilly... the Lilly Research Labs, a man called Scott had discovered a much simpler way for crystallising insulin with zinc... making crystalline insulin by a much easier method, and this method was adopted by Lilly to make their... their insulin. Lilly, or course, were the major producers of insulin in the world at that time, in the United States in particular. And without their knowledge, glucagon, which was the impurity that had been eliminated, and had, in fact, been studied by a man called Kramer in Germany... glucagon came back into crystalline insulin – that is, the zinc method of crystallising insulin did not remove glucagon – and so, unbeknownst to the experts who are using the insulin, this impurity had returned. And having read a lot about it, I came to the conclusion... because there was evidence in the literature, I came to the conclusion that this effect that Mr Bridge had found was not due to the insulin he used but to contaminating glucagon. And in the book that I wrote during the war, I even gave that as a possible explanation, but I couldn't do any research. But the day... the day we were liberated, I must say, I celebrated, but the next day I went to the American army to find an American army doctor and asked him whether he could provide me with a couple of vials of Lilly insulin. And he gave it to me; I don't know how he did, but he did. And so I went back to the lab. I still had... I had some of the Danish insulin... Novo insulin that I used... had used for my work, and so with a young man called Gerry Hers, who stayed with me all his life after that, we were still able to get a couple of rabbits, because the keeper of the physiology institute kept a few rabbits because they could be fed with the grass from the garden and they could be eaten. During the war that was quite useful. So there were rabbits, and I will always remember the day when we injected this Lilly insulin into the rabbits and got evidence of a hypoglycaemic effect. And so my first discovery was really a re-discovery... a re-discovery of glucagon, and eventually this was published and came to be known. And so what Cori was alluding to was, in fact, this re-discovery that I had made, and so I was... I was accepted and went to spend three months only... September, October, November... four months.... four months in the... the Cori lab at that time.