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. 2009 Apr 3;296(6):L1067–L1075. doi: 10.1152/ajplung.00001.2009

Fig. 3.

Fig. 3.

Histograms of tracheal flow velocity and flow directionality. Distributions of all microsphere speed and directionality measurements are shown (n = 48, 81, 101, 41, 51, 31, for PND 0, 3, 5, 7, 9, and 28, respectively). Note the broadening distribution of speed, while directionality plateaued to maximal flow directionality at PND 7.