Description:HCC1954 cells were grown in media with Lapatinib in 8 well MEMA for 72h and then fixed using 2% paraformaldehyde. Cells were stained with DAPI (nuclei), KRT5(Basal lineage), KRT19 (luminal lineage) and EdU (S phase activity). The cells were imaged on a Nikon HCA microscopy system, segmented with Cell Profiler, normalized using RUV and lowess using the spatial residuals as controls, and analyzed to identify microenvironment conditions that altered phenotypes of interest.\r\n