Serum, Horse

**Semantic type:** Immunologic Factor

**Definition:** The serum of a healthy, unvaccinated adult horse. Sera are lipid-extracted, dialyzed, sterilized, and filtered and may contain preservatives such as sodium azide. Normal horse serum may be used as a blocking agent to reduce background from non-specific binding or as a negative control in immunoassays. (NCI04)

**Synonyms:** - Normal Horse Serum - SERUM, HORSE