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#immune system #host defense #pathogen #immunity #fighting infection #innate immunity #adaptive immunity

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#anti-germ #kids hygiene #no germs #fighting infection #microbe protection #child germ defense #pathogen shield

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#immune response #fighting infection #pathogen defense #immunity #cellular defense

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#immune response #fighting infection #attacking germs #strong defense #body fighting back #killing virus #cellular immunity metaphor

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#immunoglobulin #antibody #immune response #pathogen defense #neutralization #fighting infection

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#lymphocyte #white blood cell #immune response #pathogen defense #fighting infection #lymph function