Schematic diagram showing an overview of percentage, activation status and distribution of innate populations within the NALT and CLN early after i.n. immunisation. Diagrams show DC, MФ and PMN within the NALT and CLN (A) 5, (B) 24 and, (C) 72 h after i.n. immunisation in Balb/c mice. Short arrows beside cells indicate changes in number of cell populations; i.e. arrows pointing up show significant increases, those pointing down significant decreases and straight arrows show no change in populations when compared to naïve mice. Cytokines labelled beside cells indicate significant increases in overall percentage within corresponding innate population. Long arrows indicate the possible trafficking of cells between tissues at the various time-points.