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František Dvořák 《Plant Systematics and Evolution》1966,113(3-4):375-382
Zusammenfassung Es wird die Beschreibung der ArtHesperis balansae
Fourn. Bull, Soc. bot. France 13338, 1866 gegeben und eine Änderung derFourniers chen Diagnose gebracht. Des weiteren werden die Unterscheidungsmerkmale zwischenH. balansae und der SippeH. aucheri
Boiss. Ann. Sci. nat. ser. 2, 1766, 1842 festgestellt.H. balansae
Fourn. bildet zwei Unterarten: I. subsp.balansae (mit zwei Formen:f. balansae und f.scabrida
Dvoák f. nova); II. subsp.mytilenensis
Dvoák subsp. nova. 相似文献
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Friedrich Leibenguth 《Biochemical genetics》1973,10(3):231-242
Esterase-2 polymorphism has been investigated quantitatively. Staining intensities of the homodimer bands mm, ff, and ss are not equally expressed but found in relative activities of 1:0.5:0.7 in fat bodies and 1:1:3 in testes and gut walls. Relative intensities of the parental bands are binomially distributed in the three-banded patterns of heterozygotes in an exactly tissue-specific manner. Organ-specific proportions of relative activity remain constant throughout postembryonic development. Among reasons which may influence genesis of allele- and organ-specific activities of homodimer bands in homozygotes and may lead to asymmetrical distribution of intensities in the patterns of heterozygotes, a hypothesis of differential allelic activity is discussed, according to which the structural alleles 2
m
, 2
f
, and 2
s
are closely linked to the alleles RG
a
, RG
b
, and RG
c
of a controlling gene.This work was supported by the Deutsche Forschungsgemeinschaft and submitted with Part I in partial fulfillment of the requirements for the degree of Dr.-habil. at the University of Tübingen. 相似文献
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Ohne Zusammenfassung 相似文献
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Central nervous system (CNS) stem cells have become the subject of many laboratories' efforts, presentations, and publications. Yet, in the stem cell world, CNS cells are viewed with skepticism. This is likely due to a dearth of biology (in vivo function) to accompany a flurry of phenomenological and restorative neurology studies. In this article, we compare and contrast the biological knowledge of adult forebrain epidermal growth factor-responsive neural stem cells that has emerged from our laboratories with that of hematopoietic stem cells, using two recent papers in the latter field as specific examples. A comparison of stem cell location, lineage, and repopulation suggests that our understanding of CNS stem cell biology is immature. We conclude that a greater focus on in vivo biology will enhance our knowledge and understanding of CNS stem cells. © 1998 John Wiley & Sons, Inc. J Neurobiol 36: 307–314, 1998 相似文献