PCR array analysis demonstrated significant upregulation of a total of 16 genes, related to asthma namely IL-17A, ADAM33, CHIA, IL4, CCR3, CCL5, CCL17, PMCH, CLCA1, Cma1, CCR8, FCER1A, IFNG, CCR4, CCL22 AND PRG2 following OVA sensitization but downregulated following LRE treatment (Table 2). The gene discussed is IL4; the disease is asthma.