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Nat Methods. 2010 May;7(5):387-90. doi: 10.1038/nmeth.1452. Epub 2010 Apr 11.

Using buoyant mass to measure the growth of single cells.

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  • 1Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, USA.

Abstract

We used a suspended microchannel resonator (SMR) combined with picoliter-scale microfluidic control to measure buoyant mass and determine the 'instantaneous' growth rates of individual cells. The SMR measures mass with femtogram precision, allowing rapid determination of the growth rate in a fraction of a complete cell cycle. We found that for individual cells of Bacillus subtilis, Escherichia coli, Saccharomyces cerevisiae and mouse lymphoblasts, heavier cells grew faster than lighter cells.

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PMID:
20383132
[PubMed - indexed for MEDLINE]
PMCID:
PMC2862099
Free PMC Article
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