Fluorescence microscopy of calcein-labeled cells. The Influx™ cell-loading reagent was used to load RBL cells with calcein. The image was acquired using a fluorescence microscope equipped with a cooled CCD camera and a bandpass filter set appropriately for fluorescein. The micrograph was reprinted with permission from Molecular Probes, Inc.
In endocytosis, cells use an elaborate internal membrane system to ingest macromolecules and deliver...
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