How do the characters Professor Nemur and Dr. Strauss differ?

Professor Nemur does not view Charlie as a human being, but rather like a lab rat or a test subject. He is full of himself and a workaholic. His wife harasses him, we learn, about raising his status in the scientific community, an ambition that Nemur shares with her. It seems that he will do what it takes to get what he wants with little regard for anyone else.

Dr. Strauss is the surgeon that performs the operation on Charlie. Dr. Strauss does not disconnect from Charlie and does show interset and concern for Charlie's well being. He urges caution to Nemur on many occasions.