Cardiac muscle stained for mitochondria. Mitochondria provide the energy to power contraction of the muscle.

    • NIMR, Francis Crick Institute

    Licence: Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)

    Credit: Cardiac muscle stained for mitochondria. Mitochondria provide the energy to power contraction of the muscle. NIMR, Francis Crick Institute. Source: Wellcome Collection.

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