Biofilms
from Mary Ellen Davie and George O'Toole, 2000, Micro. & Molec. Reviews, 64:847
from Kolter, R. and R. Losick. 1998. Science 280:226-227
Movie -- water flowing through biofilm channels:
http://www.erc.montana.edu/Res-Lib99-SW/Movies/1995_2000/95-M001_00-M001.htm