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and the antibodies which came three or four years later. But it was a maze of types, groups, sub-groups and sub-sub-groups, through which the patients organisms had to be passed until the phenomenon of "capule - swelling" should reveal the specific type and group which held the key to his life. So I ordered infectious precautions and the immediate delivery of a specimen of sputum in the interns' laboratory on Third and put in a call for my Resident to meet me there. Art will know what to do, I reflected, Art will know all about it. "Set up the main types," he said with a casualness which sounded a trifle forced, "and I'll drop back and have a look." When he got back he examined the slides at length and finally turned to me. "The truth is I've never seen the capsule swelling phenomenon and I don't know one bit more about it than you do. The Main Lab does them usually. I hate to have to let you down and I'll try to locate somebody in the house who can help. But I'd advise you to try another sputum specimen, and just keep on looking. I think you'll find it unless it's a streptococcal