Abstract
I. Streptococcal hyaluronidase and the bacterium Streptococcus hemolyticus, Group C, strain 7, have been identified within the same tissue section by tagging the former with its specific antibody coupled to yellow-green fluorescein and the latter with Group C antisera coupled to acid rhodamine B (C.I. No. 45100).
2. The methods used above suggest a means of studying the absorption and activity of other antigenic enzymes and toxins elaborated during the course of infection.