Severe Combined Immunodeficiency with Absence of T, Normal B Cells

**Semantic type:** Disease or Syndrome

**Definition:** An inherited, severe immunodeficiency disorder characterized by abnormalities in the development and function of T cell immunity. The peripheral T lymphocytes are absent or in very low counts. The B lymphocyte counts are normal.

**Synonyms:** - Severe combined immunodeficiency (SCID) due to absent peripheral T cell maturation