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A microfluidic device to assay spontaneous neutrophil motility. (A) Macroscopic image of the microfluidic device indicating the loading chamber and one of the eight migration mazes. Right, a magnified view (dashed box) showing a detailed diagram of the neutrophil migration maze. (B) Still images extracted from a time-lapse video obtained from a sample from a patient with sepsis, showing examples of behavior identification from neutrophil tracks. The time stamps is in h:min.
