quorum sensing in bacteria. there are 10x more bacteria cells on or in humans at any time than human cells. she is interested in simply how bacteria work at all. she talked about a squid that has bioluminescent bacteria in their bodies. the squid can use the light from the bacteria to eliminate its shadow.

she has shown that bacteria do indeed communicate. she went on to talk about all sorts of bacterial communities. bacteria can differeniate between 'me' and 'you' - they can distinguish between themselves.

she has proposed a new way to fight bacteriological infections based on quorum sensing.

great presenter style. fascinating message. worth seeing again. excellent graphics. standing ovation. excellent communicator

http://en.wikipedia.org/wiki/Quorum_sensing
http://www.molbio.princeton.edu/index.php?option=content&task=view&id=27