[Interaction between benzene and toluene in long term inhalation exposure in rats (author's transl)].

Industrial chemicals are seldom used as pure substances; hazards resulting from exposure to mixtures have, however not been solved. Our study deals with chronic inhalation toxicity of a mixture of benzene and toluene; few studies have been completed on this subject. Our results show: - leucopenia with benzene alone, at a concentration of 50 p.

[Acute toxicity of orthochloroparanitroanisole (OCNA) and orthochloroparaanisidine (OCPA) (author's transl)].

The acute effects of two industrial substances were studied in mice, rats, rabbits and guinea pigs: - lethal concentration 50 (L.D. 50) in mice and rats after intraperitoneal and oral administration; - investigation of cell growth inhibition (Hela cells), I.