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| a network of cells and cell-forming tissue that protects the body from pathogens, destroys infected, malignant cells, and removes cellular debris |
| the part of the large intestine extending from the cecum, where the large intestine begins, to the rectum |
endocardium en·do·car·di·um (ěn'dō-kär'dē-əm)
n. pl. en·do·car·di·a (-dē-ə)
The thin serous membrane, composed of endothelial and subendothelial tissue, that lines the interior of the heart.