Molecular images of single cells in 2D cultures generated on a MALDI-ToF instrument. Top: fibroblasts (left) and macrophages (right); bottom: cardiomyocytes (left) and breast cancer cells (right). Inset: a zoom in on a single breast cancer cell showing the different levels (blue, green, red) of phosphatidylcholine 36:1 in the cell. Scale bars are 200 μm; inset scale bar is 50 μm.
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