| abstract |
Methods and systems for quantifying cellular activity using labeled probes, e.g., quantum dots, are disclosed. In one example approach, a method for quantifying pathogen activity in a sample containing intact cells having labeled complexes comprises receiving images of the sample at a plurality of depths and detecting individual intact cells in the images of the sample at the plurality of depths. For each detected pathogen, discrete labels may be detected and localized in the cell at each depth, a total number of detected and localized labels may be calculated in the cell, and an activity level of the target molecule for the labeled probe in the cell determined. |