<unk>  is a Bacilli Lactobacillales that grows in long chains depending on the culture method.<unk>  displays group A antigen on its cell wall and beta-hemolysis when cultured on blood agar plate.<unk>   typically produces large zones of beta-hemolysis, the complete disruption of erythrocytes and the release of hemoglobin, and it is therefore called Group A (beta-hemolytic)<unk>  (abbreviated<unk> . Streptococci are catalase -negative.
Streptococcus pyogenes
Streptococcus anginosus
Streptococcus viridans
Streptococcus mutans
Pseudomonas aeruginosa
Streptococcus pneumoniae
Staphylococcus haemolyticus
Corynebacterium diphtheriae