Viruses: Hijackers of Your Body's Cells

시즌 1, 에피소드 3: Zoom in to see a particle 100 times smaller than bacteria: the virus, which can replicate inside living cells. Follow the life cycle of a virus as you see what viruses like HIV and Ebola do to host cells. Meet two germs that fall between bacteria and viruses - the spirochete and rickettsia.