Cover image supplied by Tomasz Szul, Department of Medicine, University of Alabama at Birmingham, Alabama, USA. Fluorescence micrograph of HeLa (human cervical cancer) cells showing the cytoskeleton microtubules, the Golgi apparatus and nucleus. In the middle, a contractile ring of mitosis is still visible between two daughter cells.

Cover image supplied by Tomasz Szul, Department of Medicine, University of Alabama at Birmingham, Alabama, USA. Fluorescence micrograph of HeLa (human cervical cancer) cells showing the cytoskeleton microtubules, the Golgi apparatus and nucleus. In the middle, a contractile ring of mitosis is still visible between two daughter cells.

Cover image supplied by Tomasz Szul, Department of Medicine, University of Alabama at Birmingham, Alabama, USA. Fluorescence micrograph of HeLa (human cervical cancer) cells showing the cytoskeleton microtubules, the Golgi apparatus and nucleus. In the middle, a contractile ring of mitosis is still visible between two daughter cells.

Cover image supplied by Tomasz Szul, Department of Medicine, University of Alabama at Birmingham, Alabama, USA. Fluorescence micrograph of HeLa (human cervical cancer) cells showing the cytoskeleton microtubules, the Golgi apparatus and nucleus. In the middle, a contractile ring of mitosis is still visible between two daughter cells.

Cover image supplied by Tomasz Szul, Department of Medicine, University of Alabama at Birmingham, Alabama, USA. Fluorescence micrograph of HeLa (human cervical cancer) cells showing the cytoskeleton microtubules, the Golgi apparatus and nucleus. In the middle, a contractile ring of mitosis is still visible between two daughter cells.

Cover image supplied by Tomasz Szul, Department of Medicine, University of Alabama at Birmingham, Alabama, USA. Fluorescence micrograph of HeLa (human cervical cancer) cells showing the cytoskeleton microtubules, the Golgi apparatus and nucleus. In the middle, a contractile ring of mitosis is still visible between two daughter cells.

Cover image supplied by Tomasz Szul, Department of Medicine, University of Alabama at Birmingham, Alabama, USA. Fluorescence micrograph of HeLa (human cervical cancer) cells showing the cytoskeleton microtubules, the Golgi apparatus and nucleus. In the middle, a contractile ring of mitosis is still visible between two daughter cells.

Cover image supplied by Tomasz Szul, Department of Medicine, University of Alabama at Birmingham, Alabama, USA. Fluorescence micrograph of HeLa (human cervical cancer) cells showing the cytoskeleton microtubules, the Golgi apparatus and nucleus. In the middle, a contractile ring of mitosis is still visible between two daughter cells.

Cover image supplied by Tomasz Szul, Department of Medicine, University of Alabama at Birmingham, Alabama, USA. Fluorescence micrograph of HeLa (human cervical cancer) cells showing the cytoskeleton microtubules, the Golgi apparatus and nucleus. In the middle, a contractile ring of mitosis is still visible between two daughter cells.

Cover image supplied by Tomasz Szul, Department of Medicine, University of Alabama at Birmingham, Alabama, USA. Fluorescence micrograph of HeLa (human cervical cancer) cells showing the cytoskeleton microtubules, the Golgi apparatus and nucleus. In the middle, a contractile ring of mitosis is still visible between two daughter cells.

Cover image supplied by Tomasz Szul, Department of Medicine, University of Alabama at Birmingham, Alabama, USA. Fluorescence micrograph of HeLa (human cervical cancer) cells showing the cytoskeleton microtubules, the Golgi apparatus and nucleus. In the middle, a contractile ring of mitosis is still visible between two daughter cells.