HLA-B27 Antigen

**Definition:** A specific HLA-B surface antigen subtype. Members of this subtype contain alpha chains that are encoded by the HLA-B*27 allele family.

**Tree numbers:** - D09.400.430.890.489.500.270 - D12.776.395.550.489.500.270 - D12.776.543.550.439.500.270 - D23.050.301.500.100.500.270 - D23.050.301.500.450.380.270 - D23.050.705.552.100.500.270 - D23.050.705.552.450.380.270

**Synonyms:** - HLA-B27