Effects of Fc density and particle size on the macrophage population.

<p>(<b>A</b>) Percentage of phagocytic cells at each Fc density condition for each particle size with a dashed line to illustrate trends. (N = 4) (<b>B</b>) Representative histograms of the FITC intensity for macrophages incubated with particles functionalized with the maximum Fc density of 1∶1 and the minimum Fc density of 1∶50. These histograms illustrate two groups: macrophages that have internalized at least one particle (phagocytic cells) and macrophages that did not internalize a particle (non-phagocytic cells).