Uropathogenic E. coli elicit a rapid flux in intracellular Ca2+ in human bladder epithelial cells (BECs). Shown here is a series of images of Fura-2–loaded BECs before (upper left) and 30 s (upper right), 90 s (lower left), or 300 s (lower right) after exposure to E. coli (see Song et al).
Image Credit: Pseudocolor ratiometric images captured with RatioTool software.
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