An Experimental Group A Streptococcus Vaccine That Reduces Pharyngitis and Tonsillitis in a Nonhuman Primate Model 2019-07-25T15:30:23+01:00July 25th, 2019| This paper cites the use of ProtoCOL 3 automated colony counter. Download as PDF file Link to original article Share This Story, Choose Your Platform! FacebookXRedditLinkedInVkEmail