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222.A 35-year-old man visits his family medicine physician complaining
of bloating, a sense of urgency, cramping abdominal pain, meteorism, diar-
rhea with excessive flatulence several hours after ingestion of milk or dairy
products. He says that he has always enjoyed milk and dairy products
without any problems, but now eating them causes him abdominal dis-
tress. In this disorder, the area shown by the arrows would have a decrease
in which of the following?


328 Anatomy, Histology, and Cell Biology


a. Specific disaccharidase activity
b. Glucose/galactose transporter activity
c. Passive diffusion of monosaccharides
d. Uptake of triglycerides by endocytosis
e. Active transport of glycerol

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