THE ACTION OF TESTICLE, KIDNEY, AND SPLEEN EXTRACTS ON THE INFECTIVE POWER OF BACTERIA

Abstract

The addition of testicle extract to cultures of 20 different bacteria just prior to inoculation enhances their infectious activity to a high degree. Kidney extracts enhance the infections of staphylococci to a less degree than testicle extracts, while spleen extracts never give rise to enhancement, and often cause the lesion to be less than would ordinarily be the case.