Identification of a distinct population of CD4⁺CD56⁺ cells. (A) Representative gating strategy used to identify a population of CD56⁺CD4⁺ cells. (B) Percentage of CD4⁺ cells within the CD56⁺ cell population (n = 10). Box plot indicates the median, upper and lower quartiles. Whiskers represent the minimum and maximum data values observed.