label: T-Cells Absent, T-Cell Receptor Signaling Defective and Natural Killer Cells and B-Cells Normal
label_lc: t-cells absent, t-cell receptor signaling defective and natural killer cells and b-cells normal
description: "A hematology test result indicating that a subject has a normal amount of B-cells and natural killer cells but T-cells are absent or found at abnormally low amounts and a defect in T-cell receptor signaling pathways has been observed."