dline 20. Dale HD, Laidlaw PD. The physiological action of fl-irninazolyl-ethylamine. J Physiol (Lond) 1910;41:318-44. Medline 21. Steinhoff M, Griffiths C, Church M, Lugar TA. Histamine. In: Burns T, Breathnach S, Cox N, Griffiths C, eds. Rook's textbook of dermatology. Oxford, United Kingdom: Blackwel