T-Cells, B-Cells and Natural Killer Cells Absent

**Semantic type:** Laboratory or Test Result

**Definition:** A hematology test result indicating that a subject's T-cells, B-cells and natural killer cells are either absent or found at abnormally low amounts.

**Synonyms:** - T-B-NK- - T-Lymphocytes, B-Lymphocytes and Natural Killer Cells Absent