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प्रश्न
How are humans protected against bacterial infection?
संक्षेप में उत्तर
उत्तर
- Vaccination to create immunity.
- Use of antibiotics, such as penicillin and streptomycin.
- The skin secretes serum which .prevents bacterial entry.
- Antibody formation in blood plasma.
- W.B.C. attacks and destroys bacteria by phagocytosis, and agglutinins.
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Common Health Problems in India
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