Photomicrographs of leukocytes characterized as basophils in 4 recently published studies. (A) FcϵRI⁺ IL-4–expressing FSC^lo/SSC^lo cells recovered from the lungs of N brasiliensis–infected mice (BALB/c) stained with Wright-Giemsa (from Voehringer et al^{5(Fig 1B)}; reprinted with permission from Elsevier. (B) IL-4–expressing DX5 (CD49b)⁺ non-CD4⁺ T cells from the liver of N brasiliensis–infected mice (BALB/c) stained with Wright-Giemsa (from Min et al^{3(Fig 3B)}; reproduced from The Journal of Experimental Medicine, 2004, 200:507-517, by copyright permission of The Rockefeller University Press). (C) FcϵRI⁺ IL-4–expressing CCR3⁻ cells recovered from the blood of naive mice (BALB/c) stained with Wright-Giemsa (from Gessner et al^{4(Fig 3C)}; copyright 2005, American Association of Immunologists, Inc). (D) FcϵRI⁺/DX5⁺ bone marrow cells recovered from normal C57BL/6J mice stained with Giemsa (from Mukai et al^{2(Fig 5C)}; copyright 2005, reprinted with permission from Elsevier.)