Blood

**Semantic type:** Body Substance

**Definition:** A liquid tissue; its major function is to transport oxygen throughout the body. It also supplies the tissues with nutrients, removes waste products, and contains various components of the immune system defending the body against infection. Several hormones also travel in the blood.

**Synonyms:** - BLOOD - Peripheral Blood - Reticuloendothelial System, Blood - Whole Blood - blood - blood - peripheral blood - portion of blood - vertebrate blood