Viewing mouse breast tumors via live microscopy enabled Egeblad's team to watch chemo drugs entering the tumor (blue) via blood vessels (green) and to monitor where and when cancer cells were killed following drug administration. Red dots are places where cells have died. Courtesy Egeblad Lab, Cell Press/Elsevier.
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From article: Live imaging shows response to cancer drugs can be boosted by altering tumor microenvironment