Uptake of extracellular Ca2+ and not recruitment from internal stores is essential for T lymphocyte proliferation.


Changes in free cytosolic calcium concentrations ([Ca2+]i) are thought to be important initiating events in the activation of T lymphocytes. Mitogen-induced increases in [Ca2+]i may result from net influx across the plasma membrane and/or release of Ca2+ from intracellular stores. In human T lymphocytes loaded with the fluorescent indicator indo-1, addition… (More)


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