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immune population icon, herd immunity to viruses line design
Immune system vector icon logo. Health bacteria virus protection. Medical prevention human germ. Healthy man reflect bacteria attack with shield. Boost Immunity with medicine concept illustration
Immune system concept. . Health bacteria virus protection. Medical prevention human germ. Healthy woman reflect bacteria attack with shield. Boost Immunity with medicine.
Immunoglobulin classes overview showing antibody isotypes, IgG, IgA, IgM dominate, with labeled structures and functions for immunity and B-cell roles. Outline diagram
Strong woman flexing her biceps, surrounded by bacteria and viruses, symbolizing a powerful immune system and health.

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