noun, noun which may take the genitive case particle 'no'
immunodeficiency
Medical term for a state in which the immune system's ability to fight infectious disease is compromised or entirely absent. Often used attributively with の.
HIVは免疫不全を引き起こすウイルスです。
HIV is a virus that causes immunodeficiency.
免疫不全の患者は感染
Patients with immunodeficiency are susceptible to infections.