Real-Time Kinetics of Ligand/Cell Surface Receptor Interactions in Living Cells:

We describe a system for extending stopped-flow analysis to the kinetics of ligand capture and release by cell surface receptors in living cells. While most mammalian cell lines cannot survive the shear forces associated with turbulent stopped-flow mixing, we determined that a murine hematopoietic precursor cell line, 32D, is capable of surviving rapid mixing using flow rates as great as 4.0 mL/s, allowing rapid processes to be quantitated with dead times as short as 10 ms.

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