Normal NK cellularity and phenotype in IL-12/23 axis–deficient patients. (A) The percentages of NK cells present in peripheral blood of indicated individuals were computed from the percentages of CD3⁻CD56⁺ cells within the lymphocyte. Each dot indicates the value obtained from one individual. (B) Circulating NK cells from indicated individuals were explored for their cell surface phenotype (except for perforin, where an intracytoplasmic staining was performed). Each dot indicates the value obtained from one individual.