MicroRNAs are exciting new regulators of genes involved in cell growth and development. Regulatory roles for microRNAs have been identified in plants and animals, but these tiny regulators have not been found in bacteria or fungi. Here, Sarnow and colleagues discuss the fascinating roles of both virus- and host-cell-encoded microRNAs in virus lifestyles.
- Peter Sarnow
- Catherine L. Jopling
- Karen A. Wehner
