Environmental Tobacco Smoke and Lung Development Activity
So, you can estimate how much space in the lung is taken up by septal tissue by counting the number of cross hairs that touch septal tissue. This technique works because of geometrical relationships. Mathematically, one can show that the ratios of volume (three-dimensional structures) are correlated with ratios area (two-dimensional structures).
The Biology Project
The University of Arizona
Tuesday, September 16, 1997
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