Figure 3  Robustness of the SMM Screening Assay: Three different model systems, varying in ligand chemical structure, cell type, receptor transmembrane topology, Bmax, and ligand affinity were tested as described in the text. Shown are mean ± SD for each data point from four randomly chosen spots on the slide. Receptor-positive and receptor-negative cells were labeled with 700 nm and 800 nm NIR fluorophores and pseudo-colored red and green, respectively, during microscopy. Scale bars = 200 μm.
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