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1925 Science 26 June 645/1 I have found in observing developing micro-colonies of Bacillus megatherium that the cells progressively enlarge.

1937 Ecology 18 455 Micro-colonies are defined as groups of four or more interconnected cells.

1959 New Biol. 30 53 The fact that a large number of nests are collected each year may be attributed to birds successfully breeding in the inaccessible parts of the caves. These micro-colonies form reservoirs from which the caves are restocked annually.

1968 L. E. Casida in T. R. G. Gray & D. Parkinson Ecol. Soil Bacteria 100 Many soil bacteria grow as microcolonies within the larger pores of soil aggregates.

2000 Microbiology 146 1311 The ability [of mycoplasmas] to form microcolonies on surfaces was shown to correlate with the gliding activity.