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391.
392.
Tanya J. Compton Rosemarie Kentie Inka Veltheim Theunis Piersma 《Journal of experimental marine biology and ecology》2008,361(2):104-110
In marine bivalves, the relative sizes of the gills and palps appear to be a useful functional trait that reflect feeding mode, i.e. suspension feeders have relatively larger gills than palps for pumping, whereas deposit feeders have relatively larger palps than gills for sorting. Also, within a species, the relative sizes of the gills and palps are related to changes in local food conditions. However, there is still no firm evidence showing that differences in the relative gill and palp sizes between species are related to diet selection. Based on the knowledge that carbon and nitrogen isotope signatures of an animals tissues reflect past diet, we compared the relative gill and palp sizes of bivalves from Roebuck Bay, northwestern Australia with their carbon and nitrogen isotope signatures. The carbon isotope signatures distinguished clear differences in diet between bivalves along a gradient from suspension to deposit feeding, and strikingly this pattern was closely followed by the relative sizes of the gills and palps of the bivalves. This study confirms that relative gill and palp sizes in bivalves are a functional trait that can be used to compare resource use between species. Furthermore, these data may suggest that morphospace occupation, as determined by relative gill and palp sizes of bivalves, could reflect a gradient of resource use between species. 相似文献
393.
Rosemarie Anthony-Pillai 《BMJ (Clinical research ed.)》2003,327(7420):923
394.
Angela F. Davies Mark G. Olavesen Richard J. Stephens Rosemarie Davidson Daniele Delneste Nicole Van Regemorter Esther Vamos Frances Flinter Iman Abusaad J. Ragoussis 《Human genetics》1996,98(4):454-459
Deletions of the short arm of chromosome 6 are relatively rare, only 16 cases having been described in the literature so
far. Here we present a detailed investigation by fluorescence in situ hybridisation of two further cases with different but
overlapping interstitial deletions involving 6p22, 6p23 and 6p24. The main features involved are craniofacial malformations,
heart and kidney defects, mental retardation/developmental delay, hypotonia and hydrocephalus. By using 36 yeast artificial
chromosome and cosmid clones from a contig covering 6p22.3–6p25 and other probes with defined cytogenetic locations within
6p21– 6p22 we have precisely localised the breakpoints involved in each of the cases, estimated the sizes of the deleted regions
and defined the region that is hemizygously deleted in both cases.
Received: 20 March 1996 / Revised: 13 May 1996 相似文献
395.
lia dos
Santos Alexander W Cook Rosemarie E Gough Martin Schilling Nora
A Olszok Ian Brown Lin Wang Jesse Aaron Marisa L Martin-Fernandez Florian Rehfeldt Christopher P Toseland 《Nucleic acids research》2021,49(1):340
DNA double-strand breaks drive genomic instability. However, it remains unknown how these processes may affect the biomechanical properties of the nucleus and what role nuclear mechanics play in DNA damage and repair efficiency. Here, we have used Atomic Force Microscopy to investigate nuclear mechanical changes, arising from externally induced DNA damage. We found that nuclear stiffness is significantly reduced after cisplatin treatment, as a consequence of DNA damage signalling. This softening was linked to global chromatin decondensation, which improves molecular diffusion within the organelle. We propose that this can increase recruitment for repair factors. Interestingly, we also found that reduction of nuclear tension, through cytoskeletal relaxation, has a protective role to the cell and reduces accumulation of DNA damage. Overall, these changes protect against further genomic instability and promote DNA repair. We propose that these processes may underpin the development of drug resistance. 相似文献
396.
Rosemarie Garland-Thomson 《Journal of bioethical inquiry》2012,9(3):339-355
It is commonly believed that disability disqualifies people from full participation in or recognition by society. This view is rooted in eugenic logic, which tells us that our world would be a better place if disability could be eliminated. In opposition to this position, I argue that that disability is inherent in the human condition and consider the bioethical question of why we might want to conserve rather than eliminate disability from our shared world. To do so, I draw together an eclectic, rather than systematic, configuration of counter-eugenic arguments for conserving disability. The idea of preserving intact, keeping alive, and even encouraging to flourish denoted by conserve suggests that disabilities would be better understood as benefits rather than deficits. I present, then, a reading of disability as a potentially generative resource rather than unequivocally restrictive liability. In other words, what I consider here is the cultural and material contributions disability offers to the world. 相似文献
397.
Dr. Rosemarie Pfützner-Eckert 《Development genes and evolution》1950,144(3):381-409
Ohne Zusammenfassung 相似文献
398.
399.
Dark-grown cells of mutant C-2A' of Scenedesmus obliquus accumulate monovinyl-and mainly divinyl-protochlorophyllide (PChlide). Both PChlide-forms are equally well photoconverted in vitro by the NADPH-protochlorophyllide oxidoreductase of the light-dependent greening mutant C-2A'of Scenedesmus obliquus. The chlorophyllide (Chlide) resulting from this photoconversion in vivo has a predominantly monovinyl character. Only small traces of a transient Chlide-form with divinyl fluorescence could be detected. 相似文献
400.
Krijn Baptist Trimbos Joyce Broekman Rosemarie Kentie Cees J. M. Musters Geert R. de Snoo 《Journal of Ornithology》2009,150(4):915-920
In the context of population genetic research, a faster and less invasive method of DNA sampling would allow large-scale assessments
of genetic diversity and genetic differentiation with the help of volunteer observers. The aim of this study was to investigate
the usefulness of eggshell membranes as a DNA source for population genetic research, by addressing eggshell membrane DNA
quality, degeneration and cross-contamination. To this end, a comparison was made with blood-derived DNA samples. We have
demonstrated 100% successful DNA extraction from post-hatched Black-tailed Godwit (Limosa limosa) eggshell membranes as well as from blood samples. Using 11 microsatellite loci, DNA amplification success was 99.1% for
eggshell membranes and 97.7% for blood samples. Genetic information within eggshell membrane DNA in comparison to blood DNA
was not affected (F
ST = −0.01735, P = 0.999) by degeneration or possible cross-contamination. Furthermore, neither degeneration nor cross-contamination was apparent
in total genotypic comparison of eggshell membrane DNA and blood sample DNA. Our research clearly illustrates that eggshell
membranes can be used for population genetic research. 相似文献