RT Book, Section A1 Stringer, Janet L. SR Print(0) ID 1187634649 T1 Histamine and Antihistamines T2 Basic Concepts in Pharmacology: What You Need to Know for Each Drug Class, 6e YR 2022 FD 2022 PB McGraw-Hill Education PP New York, NY SN 9781264264841 LK accessmedicine.mhmedical.com/content.aspx?aid=1187634649 RD 2024/04/19 AB Histamine is an endogenous substance that is widely distributed throughout the body. The two principal sites of storage for histamine are the mast cells in tissue and the basophils in blood.