Figure 3.

Six quantitative parameters characteristic of blood vessel size and leukocyte-endothelial interactions in 10 healthy subjects, and their variation among two body sites. (a). Upper (flow width) and lower (interconnective tissue width) bounds of blood vessel size. Each dot represents the average of 10 cutaneous blood vessels in each subject (N=10 subjects for 100 blood vessels total). (b) No correlation (R²=0.26) between flow width and interconnective tissue width. (c) Number of paused and adherent leukocytes per 10 videos (5 minutes of video) per body site per subject. Each dot represents one subject (N=10). (d,e) Size of freely flowing, paused and adherent leukocytes. Each dot represents a single leukocyte. (f) Time of leukocyte being paused before resuming motion along with the rest of the flow. Each dot represents a single leukocyte. Note that in all graphs N represents the number of subjects, whereas n represents the number of leukocytes.