Three patterns of hemolysis can be observed on a blood agar plate. 1. Alpha ( a ) -hemolysis: incomplete lysis of RBC - Greenish, cloudy zone around the colony. 2. Beta ( b)-hemolysis: complete lysis ...
Two separate tests for antibiotic susceptibility will performed. These tests are used to differentiate between alpha and beta hemolytic organisms. Alpha hemolytic organisms (Streptococcus pneumoniae ...