What types of cells contain lysosomes?

Lysosomes are found in nearly every eukaryotic animal cell except red blood cells. Each human cell contains approximately 300 lysosomes but are most commonly found within white blood cells. White blood cells digest more substances than any other types of cells, as they are responsible for eradicating viruses, bacteria, and other foreign materials. Animal cells need lysosomes because without them their cells would accumulate waste and become toxic. On the other hand, plant cells do not need lysosomes due to having a cell wall and vacuoles that function similarly to lysosomes.