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Genes & Cells

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SUPERSIZE ME   The more scientists look, the more giant viruses pop up. The viral behemoths, which largely infect amoebas, may be common worldwide. 


TAIL TATS  When researchers tattooed mouse tails, the only cells found with ink inside were macrophages. The tattoo appeared the same before (left) and after (right) ink-holding macrophages were killed, because it was recaptured by new macrophages.

Staphylococcus epidermidis petri dish

SKIN WIN Staphylococcus epidermidis, a species of bacteria that lives on human skin, grows here in a dish. Strains of this bacteria make a cancer-fighting compound that stops DNA synthesis.

Genes & Cells

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