P. Callahan

Publications37
h-index18
Citations1,347
Highly Influential Citations28
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Spectroscopic characterization of the light-harvesting complex of Rhodospirillum rubrum and its structural subunit.
The spectroscopic properties of the light-harvesting complex of Rhodospirillum rubrum, B873, and a detergent-isolated subunit form, B820, are presented. Absorption and circular dichroism spectra… Expand
  • 77
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An experimental evaluation of a thermal line uprating by conductor temperature and weather monitoring
Conductor temperature monitors were installed on a four-mile-long section of 115 kV transmission line and served as the basis for the dynamic thermal rating of the line during June and December of… Expand
  • 42
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Discriminative stimulus properties of 8-hydroxy-2-(di-n-propylamino)tetralin (8-OHDPAT): implications for understanding the actions of novel anxiolytics.
8-Hydroxy-2-(di-n-propylamino)tetralin (8-OHDPAT) has effects both characteristic of a serotonin (5-hydroxytryptamine; 5-HT) agonist and antagonist. To investigate the mechanism(s) of action of… Expand
  • 62
  • 3
Isolation and characterization of a subunit form of the light-harvesting complex of Rhodospirillum rubrum.
A new method is described for the isolation of subunits of the light-harvesting complex from Rhodospirillum rubrum (wild type and the G-9 mutant) in yields that approach 100%. The procedure involved… Expand
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Involvement of 5-HT receptor subtypes in the discriminative stimulus properties of mescaline.
In order to further evaluate the extent to which particular 5-HT receptor subtypes (5-HT1, 5-HT2) might be involved in the behavioral effects of hallucinogenic drugs, rats were trained to… Expand
  • 30
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Stimulus properties of dopaminergic drugs: comparisons involving selective agonists and antagonists.
Rats were trained to discriminate the putatively selective dopamine (DA) receptor agonists SKF 38393 (10 mg/kg) or Ly 171555 (0.025 mg/kg) from saline in a two-lever situation involving fixed-ratio… Expand
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Origin of the cytochrome a absorption red shift: a pH-dependent interaction between its heme a formyl and protein in cytochrome oxidase.
  • 72
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Differences in the stimulus properties of 3,4-methylenedioxyamphetamine and 3,4- methylenedioxymethamphetamine in animals trained to discriminate hallucinogens from saline.
  • P. Callahan, J. Appel
  • Psychology, Medicine
  • The Journal of pharmacology and experimental…
  • 1 September 1988
The stimulus properties of 3,4-methylenedioxyamphetamine (MDA), 3,4-methylenedioxymethamphetamine (MDMA) and several related compounds were compared to those of (+)-lysergic acid diethylamide (LSD)… Expand
  • 35
  • 2
Discriminative stimulus properties of lisuride revisited: involvement of dopamine D2 receptors.
Although the discriminative stimulus effects of the clinically useful ergot derivative lisuride have previously been related to dopamine (DA) neuronal systems, the involvement of DA D1 and D2… Expand
  • 16
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Construction of linkage maps with DNA markers for human chromosomes
DNA markers and sampling of three-generation families can be used to construct complete linkage maps of human chromosomes. This is important in mapping disease loci and in determining the genetic or… Expand
  • 280
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