Microbiology NBDHE Verified Solutions - bacteria: Bacteria are categorized based on their morphological (physical structure) and
metabolic/biochemical characteristics. - staining: Staining is essential in microbiology as it enables clinicians to visualize the shape of bacteria,
which are typica...
3. gamma-hemolytic streptococcus (unable to lyse RBCs)
beta-hemolytic streptococcus ✔️hemolytic ability is due to production of hemolysins
arranged in groups A-U (known as Lancefield groups)
Group A are among the most important human pathogens--can stick on any surface
many strains are anti-phagocytic
partially due to their ability to adhere to pharyngeal epithelium, Group A streptococci are causative for:
streptococcal pharyngitis
pyogenic infection
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