According to a piece on Popular Science, Aethlon Medical, a small biotech company in San Diego, is developing a pen-size device that can filter viruses from your blood. Blood would flow into the “Hemopurifier” from one artery, get pumped by the user’s heart action through a series of toxin filters, “like a colander,” and then flow back into the body via another artery. The device is designed to filter out smallpox, Marburg, Ebola, and other viruses. Aethlon has already tested the Hemopurifier on animals and hopes to begin human trials by the end of this year. Sign me up.