Numbers of circulating blood cells. Blood was collected from tail veins of 5- to 6-week-old mice and analyzed. Data are the means of 27 wt/wt (□), 40 wt/▵715(▧), and 29 ▵715/▵715 (▪) mice and error bars indicate standard error of mean. eo, eosinophils × 10⁷/L; mo, monocytes × 10⁷/L; ly, lymphocytes × 10⁹/L; neu, neutrophils × 10⁸/L; plt, platelets × 10¹¹/L; ery, erythrocytes × 10¹²/L.