Figure 1: Cell density and interaction density. Lung cancer section, shown as composite image with marker colors indicated in key. Cells were phenotyped in inForm, and interactions assessed with R and Phenoptr. Heatmaps on the top row show cellular density for tumor cells, CD8+, and CD8+ within 30 μm of a tumor cell. Bottom row shows density contours of CK+, and CD+ within 30 μm of a CD8+ cell.