大肠杆菌微菌落照片
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下一篇 2013-01-29 20:51:25
大肠杆菌微菌落照片
James Shapiro and Clara Hsu, Department of Biochemistry and Molecular
Biology, University of Chicago, Chicago, Ill., USA
Escherichia coli microcolonies were produced after 11.5 h of growth at 37癈
on an agar slide. This mass of tightly packed individual cells arises from a
single cell through binary division.
The emergence of a second layer of cells can be seen in the central region.
The appearance of this layer (and of successive additional layers) is a regular
feature of early colony development, which shows that the colony center remains
an active zone of cell growth. With longer times of incubation, additional
layers form. near the perimeters of older microcolonies to generate a
multilayered structure.
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