| remarkable morphological diversity of viruses and virus-like particles in hot terrestrial environments. | electron microscopic studies of the viruses in two hot springs (85 degrees c, ph 1.5-2.0, and 75-93 degrees c, ph 6.5) in yellowstone national park revealed particles with twelve different morphotypes. this diversity encompassed known viruses of hyperthermophilic archaea, filamentous lipothrixviridae, rod-shaped rudiviridae, and spindle-shaped fuselloviridae, and novel morphotypes previously not observed in nature. two virus types resembled head-and-tail bacteriophages from the families siphovir ... | 2002 | 12491107 |