Antibodies, Blocking

**Definition:** Antibodies that inhibit the reaction between ANTIGEN and other antibodies or sensitized T-LYMPHOCYTES (e.g., antibodies of the IMMUNOGLOBULIN G class that compete with IGE antibodies for antigen, thereby blocking an allergic response). Blocking antibodies that bind tumors and prevent destruction of tumor cells by CYTOTOXIC T-LYMPHOCYTES have also been called enhancing antibodies. (Rosen et al., Dictionary of Immunology, 1989)

**Tree numbers:** - D12.776.124.486.485.114.143 - D12.776.124.790.651.114.143 - D12.776.377.715.548.114.143

**Synonyms:** - Blocking Antibodies