Environmental Tobacco Smoke and Lung Development ActivityPoint Counting
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 (threedimensional structures) are correlated with ratios area (twodimensional structures). The Biology Project The University of Arizona Tuesday, September 16, 1997 Contact the Development Team
http://www.biology.arizona.edu
