Star Surgeon by Alan Edward Nourse

Once more the crew of the _Lancet_ settled down to routine, and the incident on Morua VIII seemed almost forgotten.

But a change had come about in the relations between the three doctors, and in every way the change was for the better. If Jack Alvarez was not exactly cordial to Dal Timgar, at least he had dropped the open antagonism that he had shown before. Apparently Tiger's angry outburst had startled Jack, as though he had never really considered that the big Earthman might honestly be attached to his friend from Garv II, and the Blue Doctor seemed sincere in his agreement to work with Dal and Tiger as a team.