By the way, doctor. I'm 73, in generally good health, but bothered by frequent colds and respiratory infections. I suspect I have a weakened immune system. Are there tests that will tell me if that is so?
Komaroff
Anthony L
AL
D000368:Aged; D003139:Common Cold / Q000276:immunology*; D003955:Diagnostic Tests, Routine / Q000592:standards; D006801:Humans; D007107:Immune System / Q000276:immunology*