Figure 3.10 This is a chest radiograph typical of pneumonia. Because X-ray images are negative images, a
“shadow” is seen as a white area within the lung that should otherwise be black. In this case, the left lung
shows a shadow as a result of pockets in the lung that have become filled with fluid.- What kinds of infectious agents are known to cause pneumonia?
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Figure 3.11
Chapter 3 | The Cell 91