Final answer:
Abetalipoproteinemia leads to the accumulation of triglycerides in liver and intestinal mucosa cells due to the affected formation and secretion of VLDL and chylomicrons.
Step-by-step explanation:
Abetalipoproteinemia, which is a condition that affects the absorption and metabolism of dietary fats, cholesterol, and fat-soluble vitamins, causes a severe accumulation of triglycerides in liver and intestinal mucosa cells. The disease interferes with the normal formation and secretion of very low-density lipoproteins (VLDL) and chylomicrons, both of which are responsible for the transport of triglycerides from the liver and intestines to other parts of the body. Affected individuals, therefore, experience a buildup of triglycerides in both the liver cells (hepatocytes) and the cells lining the intestinal mucosa (enterocytes).