Labels:text | screenshot OCR: Resident and Staff Physician Patient Education Chart Eosinophil & Basophil (White) Blood Cells Eosinophils: Basophils: 2-4% of 0.5-1% of white blood cells white blood cells These white blood cells are involved in allergies. Reprinted with permission from Resident and Staff Physician (c) 1991-92, 1993 by Romaine Pierson Publishers, Inc.