Z projections of 2 spinning-disk confocal micrographs at different times. This technique was used to measure the displacement of each individual fibrin structure during a known time interval to calculate the velocity. (A) Displacement of a fibrin structure during 0.6 seconds. (B) Displacement of another moving structure during 0.6 seconds. (C) Projection of 2 Z sections, one 6 minutes and 5 seconds and another one 6 minutes and 21 seconds from the beginning of polymerization. (D) Projection of 2 Z sections, one at 6 minutes and 54 seconds and another one at 7 minutes and 5 seconds. Arrows show the direction of movement. 1 and 1′ correspond to one moving structure; 2 and 2′ correspond to another moving structure. Scale bar represents 10 μm.