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B Nagy BR Watters PDW van der Merwe FPD Cotterill DU Bellstedt 《African Journal of Aquatic Science》2017,42(3):201-218
Nothobranchius cooperi, Nagy, Watters and Bellstedt, new species, is described from seasonal streams and ephemeral pools associated with the upper Mansa River system in the middle Luapula drainage and systems draining into the low-lying area marginal to the southwestern part of Lake Bangweulu, in the Luapula province of northern Zambia. It belongs to the N. brieni species group. Males of Nothobranchius cooperi are distinguished from congeners by the following unique combination of characters: body scales with broad orange posterior margin, forming a highly irregular cross-barred pattern; anal fin fairly uniform orange-red with irregular to regular, light blue-green zone close to the base; caudal peduncle length 1.2–1.3 times its depth; prepelvic length 48.8–51.9% SL; and head depth 75–77% of head length. Genetic divergence of the mitochondrial COI and ND2 genes and nuclear S7 gene support the distinction of the new species from its closest known relative, N. rosenstocki and confirms its position in the N. brieni species group. 相似文献
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Ian R Mackenzie Stefanie L Butland Rebecca S Devon Emily Dwosh Howard Feldman Caroline Lindholm Scott J Neal Francis BR Ouellette Blair R Leavitt 《BMC neurology》2006,6(1):32-7
Background
Many cases of frontotemporal dementia (FTD) are familial, often with an autosomal dominant pattern of inheritance. Some are due to a mutation in the tau- encoding gene, on chromosome 17, and show an accumulation of abnormal tau in brain tissue (FTDP-17T). Most of the remaining familial cases do not exhibit tau pathology, but display neuropathology similar to patients with dementia and motor neuron disease, characterized by the presence of ubiquitin-immunoreactive (ub-ir), dystrophic neurites and neuronal cytoplasmic inclusions in the neocortex and hippocampus (FTLD-U). Recently, we described a subset of patients with familial FTD with autopsy-proven FTLD-U pathology and with the additional finding of ub-ir neuronal intranuclear inclusions (NII). NII are a characteristic feature of several other neurodegenerative conditions for which the genetic basis is abnormal expansion of a polyglutamine-encoding trinucleotide repeat region. The genetic basis of familial FTLD-U is currently not known, however the presence of NII suggests that a subset of cases may represent a polyglutamine expansion disease. 相似文献55.
Robert E. Cox Shuichi Yamamoto Angelika Otto Bernd R.T. Simoneit 《Biochemical Systematics and Ecology》2007
A range of conifers of the southern hemisphere have been analysed (using gas chromatography–mass spectrometry (GC–MS)) for oxygenated cyclic diterpenoids. Parts of the trees examined include resins, cones, shoots, woods and barks. Trimethylsilyl (TMS) derivatives were mainly used for identification purposes. Identifications were facilitated by using previous work based on classical isolation procedures on certain species. Rules for interpreting the mass spectra of such compounds in the derivatised form were derived and are described. A compilation of such compounds with mass spectra and retention times now exists. 相似文献