Dispersion of leukocytes isolated from whole blood on a cell microarray chip and confinement in the microchambers.

<p>(A, B) Photographic light microscopic images of leukocytes on a cell microarray chip before (A) and after (B) washing of the chip surface. (C) The leukocytes showed tight confinement and had formed a monolayer in the microchamber. (Bar: 20 µm).