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  • Infection Engines

    Infection Engines

    Image of the Week

    A group of intracellular tachyzoites of the toxoplasmosis-causing parasite Toxoplasma gondii.

  • A Model Microbe

    A Model Microbe

    Image of the Week

    Tetrahymena thermophila is a freshwater unicellular ciliated protozoan related to Paramecium.

  • A Predator in the Plankton

    A Predator in the Plankton

    Image of the Week

    The comb jelly (Beroe cucumis) uses its large mouth and cilia-powered motor to prey upon members of the plankton family, including other ctenophores.

  • Coral Bleaching

    Coral Bleaching

    Animation

    (3 min 48 sec) Zoom into a coral reef and discover photosynthetic algae inside the coral’s cells. Reef-building corals rely on these symbionts for their survival.

  • Animated Life: Seeing the Invisible

    Animated Life: Seeing the Invisible

    Animated Short

    (6 min 31 sec) This animated feature celebrates 17th-century citizen-scientist Antonie van Leeuwenhoek, whose discoveries of microbes changed our view of the biological world. Also available in Spanish.