Midterm review nu570 - Study guides, Class notes & Summaries

Plasma cells (differentiated B lymphocytes) were found to contain increased amounts of rough endoplasmic reticulum. What is the explanation for this finding? Hypertrophy, due to increased size and function of the cells. At autopsy, a small heart in a 90-year-old woman was found full of lipofuscin. What is a reasonable explanation for this finding? Old age. Lipofuscin is a pigment, associated with an intracellular storage disorder, that increases when people age due to wear and tear o...