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Wiedenmayer, Christoph P; Lyo, Donggon; Barr, Gordon A (2003) Rat pups reduce ultrasonic vocalization after exposure to an adult male rat. Dev Psychobiol 42:386-91
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Wiedenmayer, C P; Noailles, P A H; Angulo, J A et al. (2002) Stress-induced preproenkephalin mRNA expression in the amygdala changes during early ontogeny in the rat. Neuroscience 114:7-11
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King, T E; Cheng, J; Wang, S et al. (2000) Maturation of NK1 receptor involvement in the nociceptive response to formalin. Synapse 36:254-66
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King, T E; Heath, M J; Debs, P et al. (2000) The development of the nociceptive responses in neurokinin-1 receptor knockout mice. Neuroreport 11:587-91
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Barr, G A; Zadina, J E (1999) The ontogeny of endomorphin-1- and endomorphin-2-like immunoreactivity in rat brain and spinal cord. Ann N Y Acad Sci 897:145-53
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Barr, G A (1999) Antinociceptive effects of locally administered morphine in infant rats. Pain 81:155-61
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Barr, G A; Zadina, J E (1999) Maturation of endomorphin-2 in the dorsal horn of the medulla and spinal cord of the rat. Neuroreport 10:3857-60
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Wiedenmayer, C P; Barr, G A (1998) Ontogeny of defensive behavior and analgesia in rat pups exposed to an adult male rat. Physiol Behav 63:261-9
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Barr, G A (1998) Maturation of the biphasic behavioral and heart rate response in the formalin test. Pharmacol Biochem Behav 60:329-35
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Yi, D K; Barr, G A (1997) Formalin-induced c-fos expression in the spinal cord of fetal rats. Pain 73:347-54
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