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<bold>FIGURE 54-2</bold> <bold>Life cycle of <i>Ascaris lumbricoides</i> (human roundworm) and dog or cat roundworm (visceral larva migrans).</bold> Humans acquire these infections by ingesting embryonated roundworm eggs from the environment (1). After ingestion the parasites hatch in the upper intestine (2), cross the bowel wall (3), and enter the bloodstream. The human <i>Ascaris</i> (innermost set of arrows in the top half of the diagram) enters the ...
<bold>FIGURE 54-2</bold> <bold>Life cycle of <i>Ascaris lumbricoides</i> (human roundworm) and dog or cat ro...
<bold>Fig GI 27-11 <italic>Ascaris</bold>.</bold> The linear intestinal tract of the roundworm is filled with barium (arrow).<sup>29</sup>
<bold>Fig GI 27-11 <italic>Ascaris</bold>.</bold> The linear intestinal tract of the roundworm is filled with bariu...