Expression of CCR3 is elevated in the setting of human immunodeficiency virus infection (van der Meer et al., 2000; Van Der Meer et al., 2001), and elevated expression of CCR3 is observed in reactive microglia and astrocytes around the amyloid deposits in Alzheimer’s disease (Xia et al., 1998). The gene discussed is CCR3; the disease is Alzheimer disease.