CENTRAL AND PERIPHERAL ALTERATION OF THE CHOLINERGIC ENZYMES ACTIVITIES OF THE RAT IN RESPONSE TO REPEATED AND ACUTE THALLIUM EXPOSURE. - Kuperberg, J. Michael; Ngong, Josephine M.; Rutledge, Ladonna P.; Stino, Farid K. R.; Soliman, Karam F. A; Kolta, Nalak G. (Toxic Substance Mechanisms, 1998)