A patient whose symptoms include discolored, violet-colored skin with large blisters, fever, malaise, rapid heart rate, and a great deal of pain is diagnosed with necrotizing fasciitis. The rapid spread of S. aureus and group A streptococci that ravage the connective tissue..
Radioautography is the method of choice for revealing which of the following in a tissue section?
Sites of synthesis of various molecules
A malignant cell of mesenchymal origin contains cytoplastic filaments composed of vimentin. Which of the following indicates the average diameter of these filaments?
Which of the following best described the appearance of a unit membrane under a transmission electron microscope?
Which of the following descriptions best characterizes a phagosome?
contain aging organelles
A patient who was a long-time heavy smoker was seen by a physician for a persistent cough. A biopsy of the bronchial lining displayed a change in the epithelium from pseudostratified ciliated columnar to stratified squamous. The patient decided to quit smoking, and a second biopsy 6 months later showed that a reversal had occurred in the epithelium; it was back to the normal pseudostratified ciliated columnar. This patient had