Criteria of virulence amongst streptococci, with some remarks on streptococcal leucocidin

Abstract

FOR the last ten years a very active discussion has been carried on (x 1000.) FIG. %-This is a film of the heart blood of a rabbit which died from an injection of the strain P.M. 4417 ; no cocci are seen in the field ; the leucocytes are nearly intact, and the red blood corpuscles are.fairly well preserved. (x 1000.