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Cover: Alexa 488 and quantum dots (QD) staining of mortalin in normal human cells. The specimens were continuously illuminated with light from a 100 W mercury lamp under a 100 X oil-immersion objective. Whereas labeling signals of Alexa 488 faded by 6 min, the signals of QD was stable.

ISSN:1001-0602(Print),1748-7838(Online);CN:31-1568

suggested resolution 1024*768