erythrocytes « Back to Glossary IndexRed blood cells Related Articles: 15 – 4 The Immune System Is a Complex Collection of Organs, Tissues, and Cells19 – 3 Some Escherichia coli Strains Cause Diarrheal Diseases by Colonizing the Intestine, while Others Are Capable of Extraintestinal Infections.21 – 4 Plasmodium species cause malaria« Back to Glossary Index