ABCG2 and legionellosis: Among these genes, 14 were upregulated (bacterial secretion system, cysteine and methionine metabolism, butanoate metabolism, TCA cycle, glutathione metabolism, platinum drug resistance, drug metabolism-cytochrome P450, metabolism of xenobiotics by cytochrome P450, pentose and glucuronate interconversions, C5 branched dibasic acid metabolism, legionellosis, thermogenesis, biosynthesis of various plant secondary metabolites, and other glycan degradation), while only one was downregulated (ABC transporters).