S100A8 and MALT lymphoma: For example, Mueller and co-workers analyzed gene expression profiles to predict histopathological stages in a mouse model of MALT lymphoma (Mueller et al., 2003); DNA microarrays of gastric biopsies obtained from H. pylori-infected rhesus macaques provided new insights in host factors involved in pathogenesis (Huff et al., 2004); and a set of host genes was identified to be transcribed independently of the phosphorylation state of the CagA protein, a major H. pylori virulence factor (El-Etr et al., 2004).