Streptococci 
Streptococci are Gram positive cocci those arrange in chains or pairs. Streptococci found in normal flora of humans and other
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streptococcus
Streptococcus
Streptococcus is one of the bacteria commonly present as normal flora of the human body. They are gram positive, nonmotile,
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Optochin Susceptibility Test
Methylhydrocupreine hydrochloride (Optochin) is an quinine derivative and a water soluble compounds. In a very low concentrations, it inhibits S.
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