Expression of NK Receptors among NK Cell Subpopulations from Cord Blood, HIV-Infected and Healthy Adults.

<p>Surface NK markers were assessed by flow cytometry on CD56posCD16pos (56pos) and CD56negCD16pos (56neg) NK cell subpopulations from cord blood (CB) (n = 10), healthy adult HIV-seronegative individuals (AD) (n = 10) and viremic HIV-infected donors (HIV) (n = 10). A) Proportion of NK subsets staining positive for each receptor. B) Mean fluorescence intensity (MFI) for receptor expression among NK subpopulations positive for each surface receptor. Data between groups were compared using the Mann-Whitney test, * p<0.05, ** p<0.01. Bars represent mean ± SEM. Siglec = sialic acid binding immunoglobulin-like lectin. Representative plots showing receptor expression together with the Fluorescence Minus One (FMO) plots employed in these analyses are provided in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0067700#pone.0067700.s001" target="_blank">Figure S1</a>.