排序方式: 共有37条查询结果,搜索用时 15 毫秒
11.
Madeleine Lamborot A. Espinoza E. Alvarez 《Cellular and molecular life sciences : CMLS》1979,35(5):593-595
Summary Most of 12 taxa karyotypes retain 6 pairs of metacentric macrochromosomes (primitive), but show reduced numbers of microchromosomes (2n=34, 32 and 30). Others whow increased diploid numbers due to macrochromosomal fissions (up to 4 fissions, 2n=40). One shows a fission polymorphism.We thank Dr. W.P. Hall for his many suggestions and comments; and L. Alvarez, E. Barrientos, I. Campos, M. Fernandez and F.N. Manzur for generous assistance. This study was aided by the Project del Servicio de Desarrollo Científico de la Universidad de Chile, No. B259-783. 相似文献
12.
13.
14.
15.
N. S. Yamamoto A. M. Kelmer Bracht E. L. Ishii F. S. Kemmelmeier M. Alvarez A. Bracht 《Cellular and molecular life sciences : CMLS》1985,41(1):55-57
Summary The effect of several natural products ofStevia rebaudiana on glucose production and oxygen uptake in rat renal cortical tubules was investigated. Steviol, isosteviol and glucosilsteviol decreased glucose production and inhibited oxygen uptake. The sweet principle stevioside, and steviolbioside, however, were without effect on gluconeogenesis and oxygen uptake. 相似文献
16.
A. L. Jordi-Racine E. Alvarez J. Reichen 《Cellular and molecular life sciences : CMLS》1988,44(4):343-345
Summary We evaluated the effect of hypoxia (7% v/v) on hepatic heme turnover in vivo and microsomal heme protein content in male Sprague-Dawley rats. Hepatic heme protein turnover, measured as14CO-production during continuous infusion of 5-14C-aminolevulinic acid, a precursor of nonerythrogenic heme, was decreased 60% during hypoxia and returned to control levels promptly after reoxygenation. Hepatic cytochrome P-450 content was decreased in hypoxic and 24-h reoxygenated animals. We conclude that normobaric hypoxia decreases hepatic cytochrome P-450 which could contribute to decreased drug metabolism in hypoxia. This decrease is probably due to heme oxygenase-independent breakdown of hepatic heme. 相似文献
17.
18.
19.
Lindblad-Toh K Wade CM Mikkelsen TS Karlsson EK Jaffe DB Kamal M Clamp M Chang JL Kulbokas EJ Zody MC Mauceli E Xie X Breen M Wayne RK Ostrander EA Ponting CP Galibert F Smith DR DeJong PJ Kirkness E Alvarez P Biagi T Brockman W Butler J Chin CW Cook A Cuff J Daly MJ DeCaprio D Gnerre S Grabherr M Kellis M Kleber M Bardeleben C Goodstadt L Heger A Hitte C Kim L Koepfli KP Parker HG Pollinger JP Searle SM Sutter NB Thomas R Webber C Baldwin J Abebe A Abouelleil A Aftuck L Ait-Zahra M Aldredge T 《Nature》2005,438(7069):803-819
Here we report a high-quality draft genome sequence of the domestic dog (Canis familiaris), together with a dense map of single nucleotide polymorphisms (SNPs) across breeds. The dog is of particular interest because it provides important evolutionary information and because existing breeds show great phenotypic diversity for morphological, physiological and behavioural traits. We use sequence comparison with the primate and rodent lineages to shed light on the structure and evolution of genomes and genes. Notably, the majority of the most highly conserved non-coding sequences in mammalian genomes are clustered near a small subset of genes with important roles in development. Analysis of SNPs reveals long-range haplotypes across the entire dog genome, and defines the nature of genetic diversity within and across breeds. The current SNP map now makes it possible for genome-wide association studies to identify genes responsible for diseases and traits, with important consequences for human and companion animal health. 相似文献
20.