Bardo, M. ., & Hughes, R. . (1981). Single-dose tolerance to morphine-induced analgesic and hypoactive effects in infant rats. Developmental Psychobiology, 14(5), 415-23. https://doi.org/10.1002/dev.420140504

Bardo, M. ., Bhatnagar, R. ., Gebhart, G. ., & Hughes, R. . (1982). Opiate receptor development in midbrain and forebrain of posthatch chicks. Brain Research, 255(4), 668-73. https://doi.org/10.1016/0165-3806(82)90064-5

Bardo, M. ., & Gunion, M. . (1982). Within- and between-subjects differences in the effect of morphine in mice. Psychological Reports, 50(2), 567-73. https://doi.org/10.2466/pr0.1982.50.2.567

Bardo, M. ., Bhatnagar, R. ., & Gebhart, G. . (1982). Differential effects of chronic morphine and naloxone on opiate receptors, monoamines, and morphine-induced behaviors in preweanling rats. Brain Research, 256(2), 139-47. https://doi.org/10.1016/0165-3806(82)90037-2

Bardo, M. ., Bhatnagar, R. ., & Gebhart, G. . (1983). Chronic naltrexone increases opiate binding in brain and produces supersensitivity to morphine in the locus coeruleus of the rat. Brain Research, 289(1-2), 223-34. https://doi.org/10.1016/0006-8993(83)90023-9 (Original work published 1983)

Bardo, M. ., Schmidt, R. ., & Bhatnagar, R. . (1985). Effects of morphine on sprouting of locus coeruleus fibers in the neonatal rat. Brain Research, 354(2), 161-8. https://doi.org/10.1016/0165-3806(85)90167-1

Bardo, M. ., Miller, J. ., & Neisewander, J. . (1984). Conditioned place preference with morphine: the effect of extinction training on the reinforcing CR. Pharmacology, Biochemistry, and Behavior, 21(4), 545-9. https://doi.org/10.1016/s0091-3057(84)80037-4

Bardo, M. ., Miller, J. ., & Risner, M. . (1984). Opiate receptor supersensitivity produced by chronic naloxone treatment: dissociation of morphine-induced antinociception and conditioned taste aversion. Pharmacology, Biochemistry, and Behavior, 21(4), 591-7. https://doi.org/10.1016/s0091-3057(84)80044-1

Bardo, M. ., Lacy, M. ., & Mattingly, B. . (1990). Effects of apomorphine on novelty-induced place preference behavior in rats. Pharmacology, Biochemistry, and Behavior, 37(1), 89-93. https://doi.org/10.1016/0091-3057(90)90046-k

, Bhatnagar, R. ., & Bardo, M. . (1983). Norepinephrine depletion in the spinal cord gray matter of rats with experimental allergic encephalomyelitis. Journal of Neurochemistry, 40(6), 1771-3. https://doi.org/10.1111/j.1471-4159.1983.tb08156.x