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Barr, Gordon A (2011) Formalin-induced c-fos expression in the brain of infant rats. J Pain 12:263-71
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Wiedenmayer, C P; Barr, G A (2000) Mu opioid receptors in the ventrolateral periaqueductal gray mediate stress-induced analgesia but not immobility in rat pups. Behav Neurosci 114:125-36
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Wiedenmayer, C P; Goodwin, G A; Barr, G A (2000) The effect of periaqueductal gray lesions on responses to age-specific threats in infant rats. Brain Res Dev Brain Res 120:191-8
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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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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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Yi, D K; Barr, G A (1996) The suppression of formalin-induced fos expression by different anesthetic agents in the infant rat. Dev Psychobiol 29:497-506
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