gram positive

Differences Between Streptococcus Pneumoniae and Viridans Streptococci

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S.N   Streptococcus pneumoniae S.N   Viridans streptococci 1. Are capsulated. 1. Are non-capsulated. 2. Shape is lanceolate or flame shaped. 2. Shape is oval or round cells. 3. Give Positive quellung test. 3. Give negative quellung test. 4. On blood agar, dome-shaped initially, later on appear as draughtsman colonies. 4. On blood agar, dome-shaped. … Read more

Differences between exotoxin and endotoxin

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S.N   Exotoxin Endotoxin 1. It is released outside the cell. It is present inside the cell membrane and released only when the cell lyse. 2.  It is proteinous in nature. It is lipoproteinous  in nature. 3  It is heat labile generally. It is heat stable generally. 4 It is mostly secreted by gram positive … Read more