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Substance abusers are characterized by hypersensitivity to reward. This leads to maladaptive decisions generally, as well as those on laboratory-based decision-making tasks, such as the Iowa Gambling Task (IGT). Negative affect has also been shown to disrupt the decision-making of healthy individuals, particularly decisions made under uncertainty. Neuropsychological theories of learning, including...
Amphiphilic detergent-soluble acetylcholinesterase (AChE) from Torpedo is converted to a hydrophilic form by digestion with phospholipase C from Trypanosoma brucei or from Bacillus cereus. This lipase digestion uncovers an immunological determinant which crossreacts with a complex carbohydrate structure present in the hydrophilic form of all variant surface glycoproteins (VSG) of T. brucei. This crossreacting...
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