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Strain variation and host specificity of Astragalus rhizobiaDu, Juan. January 1964 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1964. / eContent provider-neutral record in process. Description based on print version record. Bibliography: l. 106-110.
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A revision of the genus Astragalus in British ColumbiaDavidson, John Fraser January 1940 (has links)
[No abstract submitted] / Science, Faculty of / Botany, Department of / Graduate
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A taxonomic revision of Astragalus mokiacensis and allied taxa within the Astragalus lentiginosus complex of Section Diphysi /Alexander, J. Andrew. January 2007 (has links)
Thesis (Ph. D.)--Oregon State University, 2008. / Printout. Includes bibliographical references (leaves 219-232). Also available on the World Wide Web.
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Cultivation practices for Astragalus membranaceus in the southeastern United StatesWang, Meili. Shannon, Dennis Alan, January 2009 (has links)
Thesis--Auburn University, 2009. / Abstract. Includes bibliographical references (p. 108-119).
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A fistful of Astragalus : phenotypic and genotypic basis of the most taxon rich species in the North American flora /Knaus, Brian J. January 1900 (has links)
Thesis (Ph. D.)--Oregon State University, 2009. / Printout. Includes bibliographical references. Also available on the World Wide Web.
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A fistful of Astragalus : phenotypic and genotypic basis of the most taxon rich species in the North American flora /Knaus, Brian J. January 1900 (has links) (PDF)
Thesis (Ph. D.)--Oregon State University, 2009. / Includes bibliographical references. Also available in PDF format via the Internet.
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Isolation and characterisation of the potential immunomodulatory principles from Astragalus membranaceusWatson, Robert James January 2006 (has links)
[Abstract]: This thesis describes an in-vivo evaluation of ethanolic extracts of Astragalus membranaceus and fractions derived from this extract administered either orally by gavage or by intraperitoneal injection to Balb/c mice. Total antibody titre was used as an indicator of humoral immune response. Cell mediated immune response was determined using Interferon-γ and Interleukin-12 as indicators. Additionally, mice were vaccinated with a killed Salmonella typhimurium vaccine, previously demonstrated to induce humoral response but not cell mediated immunity, to determine whether the acquired immune response was enhanced or suppressed. Serum was analysed for total antibody titre using an enzyme-linked immunosorbent assay. Serum and splenocyte culture supernatants were analysed for levels of interferon-γ and interleukin-12. No statistically significant differences were observed between groups either orally gavaged or intraperitoneally injected with extracts of Astragalus membranaceus, or orally gavaged with fractions derived from this extract when compared with the control groups.
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A systematic and ecological study of Astragalus diaphanus (Fabaceae)Wright, Carolyn E. 07 December 1990 (has links)
Astragalus diaphanus is a rare plant endemic to the
John Day River drainage of north-central Oregon. This
species has several interesting features, including the
dimorphism of its fruit and its geographical isolation from
the two nearest taxonomically related species, which occur
in Colorado. This study addressed the species' distribution
and habitat, the taxonomic relationships between the
varieties of A. diaphanus, certain morphological comparisons
among the species, possible reasons for the rarity of A.
diaphanus, and the population biology of this taxon.
Astragalus diaphanus was found to be more widespread in
the John Day drainage than was previously known, but its
range has shrunk due to habitat loss along the Columbia
River. In this study, two varieties are recognized within a
single species, based on striking morphological differences
in pod forms which correspond to a break in geographical
distribution. Other morphological characters are similar
between the varieties. Flavonoid analysis and chromosome
counts support this taxonomic treatment. Further study is
needed to elucidate the relationships of A. diaphanus and
its taxonomic relatives in Colorado.
A low reproductive rate in A. diaphanus appears to be a
potential problem, possibly contributing to its rarity. The
species exhibits a combination of annual and biennial lifecycles.
Many annual individuals of A. diaphanus perish
without reproducing. This may be off-set by a large seedbank,
which is replenished sporadically by high production
in robust biennials.
There is not a need at the present time to provide
legal protection to var. diaphanus, the more widespread and
common taxon. However, var. diurnus has a very limited
distribution along the South Fork of the John Day River and
is represented by few populations. Many of these are
marginally viable, and there are active threats to the
existence of the latter variety. Astragalus diaphanus var.
diurnus should be afforded legal protection as an endangered
species. / Graduation date: 1991
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A preliminary investigation of the constituents of Astragalus wootoni. [Beta]-substituted-[Delta][superscript alpha], [superscript Beta]-butenolides of the naphthalene, indene and norcholane series ...Knowles, William Standish, January 1942 (has links)
Thesis (Ph. D.)--Columbia University, 1942. / Vita. Bibliography: p. 9, 15, 18.
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Study of the modulating effects of Astragalus saponins on tumor angiogenesis and invasiveness in colon cancer cellsLaw, Pui Ching 01 January 2010 (has links)
No description available.
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