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IL-15 induces a leucocyte influx in vivo. (a) air pouches were raised before injection of PBS or IL-15, exudates were harvested 6 h later and the number of leucocytes was calculated (means ± SEM (n ≥ 8)). C, representative preparations of cells harvested from concentrated PBS-injected mice and from non concentrated IL-15-injected mice. *P < 0·05 versus control by anova.
