[R proteins as an integral index of the action on the body of industrial allergens in an experiment on white rats].

P proteins were just obtained from white rats and a method to testify them with the help of highly stable anti-P serum was worked out. Normal titres of P proteins are 1:1600 and 1:3200. Different models of sensitisation to the industrial allergens (delivered intracutaneously, by inhalation, into trachea in various doses and concentrations) were used in trials of the method. P protein level appeared to correlate with the sensitisation degree estimated by specific allergy tests. The highest P protein titer is due to the toxic allergic conditions (up to 1:102400), the minimal to sensitization of threshold (up to 1:12800) level. Provocative inhalation test in sensitized rats induced an increase of P protein titer as delayed hypersensitivity was forming.