Журнал Science по названию
Отображаемые элементы 1-20 из 161639
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(American Association for the Advancement of Science, 1996-5-10)
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(American Association for the Advancement of Science, 1900-05-11)
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(American Association for the Advancement of Science, 1900-07-20)
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(American Association for the Advancement of Science, 1994-12-16)
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(American Association for the Advancement of Science, 1990-08-17)
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(American Association for the Advancement of Science, 1990-03-23)
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(American Association for the Advancement of Science, 1927-04-15)
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(American Association for the Advancement of Science, 1959-08-21)10-Hydroxy-Δ2-decenoic acid, the major component of the lipide fraction of royal jelly, exhibits antibiotic activity against many bacteria and fungi. This fatty acid is less than one-fourth as active as penicillin against ...
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(American Association for the Advancement of Science, 1961-09-08)10-Methoxyharmalan, an alkaloid obtained by the cyclodehydration of melatonin, itself a derivative of serotonin, is a more potent serotonin antagonist than harmaline and is only slightly less active than lysergic acid ...
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(American Association for the Advancement of Science, 1944-09-15)
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(American Association for the Advancement of Science, 1984-09-07)
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(American Association for the Advancement of Science, 1991-05-03)
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(American Association for the Advancement of Science, 1972-07-07)11-Hydroxy-Δ9-tetrahydrocannabinol, administered intravenously to man, produces psychologic and pharmacologic effects that persist for several hours. The drug and its metabolites are excreted in urine and feces for more ...
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(American Association for the Advancement of Science, 1973-08-24)Stachybotrys atra cultures grown on oats produced five compounds toxic to brine shrimp; three are the sesquiterpenoid mycotoxins known as 12,13-epoxy-Δ9-trichothecenes. One trichothecene is roridin E, a known metabolite ...
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(American Association for the Advancement of Science, 1983-2-18)[123I]Insulin was injected intravenously into rats and the distribution and kinetics of radioactivity were analyzed by external detection with a scintillation camera connected to a computer. When injected alone, [123I]insulin ...
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(American Association for the Advancement of Science, 1977-8-12)The actions of 1,25-dihydroxycholecalciferol [1,25-(OH)2D3] and parathormone, both effective bone-resorptive agents in vivo and in vitro, were tested on CT (osteoclast-like) and PT (osteoblast-like) bone cells maintained ...
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(American Association for the Advancement of Science, 1972-02-18)1,25-Dihydroxycholecalciferol (DHCC), isolated from kidney homogenates incubated with 25-hydroxycholecalciferol (HCC), stimulated the release of previously incorporated 4545Ca from fetal rat bones in organ culture, at ...
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(American Association for the Advancement of Science, 1971-07-02)The major polar metabolite of cholecalciferol (vitamin D3) present in chick intestinal mucosa has been chemically characterized by mass spectrometric analysis to have a molecular formula of C27H4403 and a structure of ...
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(American Association for the Advancement of Science, 1972-06-09)Nephrectomy prevents completely the bone calcium mobilization response to 25-hydroxycholecalciferol. In contrast it does not prevent this response to 1,25-dihydroxycholecalciferol. Because it is known that the kidney is ...
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(American Association for the Advancement of Science, 1984-6-29)The hormonal form of vitamin D3, 1,25-dihydroxyvitamin D3 [1,25(OH)2D3], at picomolar concentrations, inhibited the growth-promoting lymphokine interleukin-2, which is produced by human T lymphocytes activated in vitro by ...
Отображаемые элементы 1-20 из 161639