For example, recruitment of cells into subcutaneous diffusion chambers following primary S. stercoralis infection of WT, EPO−/− and MBP-1−/− mice did not differ [30], eosinophil recruitment to the peritoneal cavity following B. pahangi L3 infection of EPO−/− but not MBP-1−/− mice was reduced [26] while eosinophil recruitment to the thoracic cavity of L. sigmodontis infected EPO−/− mice increased [14]. This evidence concerns the gene EPO and infection.