Gram +ve bacteria |
Gram -ve bacteria |
1. They remain coloured blue or purple with Gram stain even after washing with absolute alcohol or acetone. 2. The cell wall is 100-200A thick, single layered. 3. The bacteria are less resistant to antibiotics. 4. They are mostly non-pathogenic.
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1. They don't retain the stain when washed with absolute alcohol. 2. The cell wall is 70-120Å thick, two layered. 3.They are more resistant to antibiotics. 4. They are mostly pathogenic.
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