Cover ImageColored scanning electron micrograph of the surface structure of a lymphocyte. Lymphocytes are key elements of the immune system. Researchers find that sex hormones can affect immune responses to pathogens or vaccines (see p. 383). (Image © Ami Images/Science Source.)
Microbe Magazine, Cover Image
Cover ImageVaccines are crucial for controlling the spread of influenza, but currently are only effective against a limited mix of strains. A universal vaccine remains elusive, but progress is being made (see p. 433). (Image © James King-Holmes/ Science Source.)
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