On February 19th, Dr. Collip found that he was unable to refine the extract by his method and was unable to keep up his supply to the wards. During the following six weeks, or longer, no extract was available for clinical tests. I believe the reason for this to be that Collip, wishing to keep his process a secret, had not kept careful records.
From Frederick Banting
It was an extremely trying time for me. Best was still intimate with MacLeod and the others about the laboratory. I was out of the picture entirely. MacLeod had taken over the whole physiological investigation. Collip had taken over the biochemistry. Professor Graham and Dr. Campbell had taken over the whole clinical aspect of the investigation.
From Frederick Banting
Best said possibly the only thing that would have changed my attitude: 'What will happen to me?' 'Your friend MacLeod will look after you,' I said. Best replied, 'If you get out, I get out.' There was silence for some moments. I thought of all the joy of the early experiments which we had known together. Here was loyalty.
From Frederick Banting
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