Fig. 5

Gene ontology term (GO) representation of relevant functions from the functional enrichment analysis (significance code: *: < 0.05; **: < 0.01; ***: < 0.001; the dot represents marginal enrichment for a p = 0.056). The number of times a function occurred in the list of upregulated genes for the non-immune-challenged (NIC) workers, immune-challenged (IC) workers, and the expected number (following a random distribution) are coloured blue, red and grey, respectively