Little is known at present concerning the physiological mode of activity of the dermatitis- producing materials present in the poison ivy plant, the Japanese lac tree, the cashew nut tree and other members of the anacardiacea family, other than the fact that the 1, 2-and 1, 3- dihydric phenols are the most active in respect to their ability to produce a contact dermatitis.* In preparation for a clinical program to obtain more information about the ...
