and concluded that proteins were degraded in the lysosome (Straus 1954). In another series of experiments, Zanvil Cohn fed macrophages (a type of cell in the immune system) radiolabeled bacteria.

Lysosomes are organelles found within nearly all eukaryotic cells and are responsible for breaking down larger molecules such as proteins, fats and carbs. Lysosomal exocytosis occurs when the ...