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Issue 3, 2014
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Measuring single cell mass, volume, and density with dual suspended microchannel resonators

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Abstract

Cell size, measured as either volume or mass, is a fundamental indicator of cell state. Far more tightly regulated than size is density, the ratio between mass and volume, which can be used to distinguish between cell populations even when volume and mass appear to remain constant. Here we expand upon a previous method for measuring cell density involving a suspended microchannel resonator (SMR). We introduce a new device, the dual SMR, as a high-precision instrument for measuring single-cell mass, volume, and density using two resonators connected by a serpentine fluidic channel. The dual SMR designs considered herein demonstrate the critical role of channel geometry in ensuring proper mixing and damping of pressure fluctuations in microfluidic systems designed for precision measurement. We use the dual SMR to compare the physical properties of two well-known cancer cell lines: human lung cancer cell H1650 and mouse lymphoblastic leukemia cell line L1210.

Graphical abstract: Measuring single cell mass, volume, and density with dual suspended microchannel resonators

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Publication details

The article was received on 04 Sep 2013, accepted on 15 Nov 2013 and first published on 02 Dec 2013


Article type: Paper
DOI: 10.1039/C3LC51022K
Citation: Lab Chip, 2014,14, 569-576
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    Measuring single cell mass, volume, and density with dual suspended microchannel resonators

    A. K. Bryan, V. C. Hecht, W. Shen, K. Payer, W. H. Grover and S. R. Manalis, Lab Chip, 2014, 14, 569
    DOI: 10.1039/C3LC51022K

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