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Emphysema. (a) Illustration comparing normal lungs and emphysemic lungs. The inserts illustrate how
Internal structures of main sequence stars, convection zones with arrowed cycles and radiative zones
Myocardial Oxygen supply and demand
Hormonal changes during the ovarian and uterine cycles.
Pathways of nitrogen metabolism (purple) in the general pattern of intermediary metabolism
The growing demand for electrical power, carbon sequestration and storage must be a priority