Pathogen Surveillance--the Flies Have It

Discoveries about the innate immune systems of flies and mammals reveal startling similarities between these two systems. In a Perspective, [ Khush et al .][1], discuss new findings ([ Choe et al .][2]) showing a key role for pattern recognition receptors of the peptidoglycan recognition protein family in the induction of appropriate immune responses in the fruit fly. [1]: http://www.sciencemag.org/cgi/content/full/296/5566/273 [2]: http://www.sciencemag.org/cgi/content/short/296/5566/359