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Lau, C E; Sun, L; Wang, Q et al. (2002) The effect of zolpidem on operant behavior and its relation to pharmacokinetics after intravenous and subcutaneous administration: concentration-effect relations. Behav Pharmacol 13:93-103
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Simpao, A; Sun, L; Falk, J L et al. (2001) Spontaneous activity as a contingency-controlled behavior within an operant context: alprazolam concentration-effect relations after subcutaneous administration in rats. Psychopharmacology (Berl) 155:269-77
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Lau, C E; Wang, Y; Sun, L et al. (2001) Negligible tolerance produced by chronic intravenous alprazolam administration: a low serum drug concentration effect. Exp Clin Psychopharmacol 9:110-6
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Sun, L; Lau, C E (2000) Intravenous and oral clozapine pharmacokinetics, pharmacodynamics, and concentration-effect relations: acute tolerance. Eur J Pharmacol 398:225-38
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Lobarinas, E; Falk, J L (2000) Comparison of benzodiazepines and the non-benzodiazepine agents zolpidem and zaleplon with respect to anxiolytic action as measured by increases in hypertonic NaCl-solution drinking in rats. Psychopharmacology (Berl) 149:176-80
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Sun, L; Falk, J L; Nguyen, K N et al. (2000) Post-injection delays in experimental chambers, but not in home cages, produce both sensitization and tolerance of operant behaviour to midazolam: relation to pharmacokinetics. Behav Pharmacol 11:133-42
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Wang, Y; Roy, A; Sun, L et al. (1999) A double-peak phenomenon in the pharmacokinetics of alprazolam after oral administration. Drug Metab Dispos 27:855-9
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Wang, Q; Sun, L; Lau, C E (1999) Determination of zolpidem in serum microsamples by high-performance liquid chromatography and its application to pharmacokinetics in rats. J Chromatogr B Biomed Sci Appl 734:299-305
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Smith, C; Ma, F; Lau, C E (1999) Dose independent pharmacokinetics of caffeine after intravenous administration under a chronic food-limited regimen. Drug Metabol Drug Interact 15:83-96
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Lobarinas, E; Falk, J L (1998) Schedule-induced polydipsic consumption of hypertonic NaCl solutions: effects of chlordiazepoxide. Physiol Behav 63:419-23
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