Fig. 1.

Co-stimulatory, apoptosis and natural killer (NK) receptor expressions in NK cell subsets. Freshly purified NK cells and in vitro differentiated NK1 and NK2 cells from atopic dermatitis (AD) and healthy individuals stained with fluorescent-labelled or unlabelled co- stimulatory, apoptosis and NK cell receptor monoclonal antibodies (mAbs) and analysed by flow cytometry. Unlabelled antibodies detected with a FITC-conjugated goat anti-human Ig. Results of co-stimulatory and apoptosis are shown as mean ± s.d. of eight AD and six healthy individuals, and NK receptor results are shown as mean ± s.d. of nine individuals in each group. *P≤ 0·001 or P≤ 0·01 and **P ≤ 0·05.