منابع مشابه
Unexpected origins of the enhanced pairing affinity of 2′-fluoro-modified RNA
Various chemical modifications are currently being evaluated for improving the efficacy of short interfering RNA (siRNA) duplexes as antisense agents for gene silencing in vivo. Among the 2'-ribose modifications assessed to date, 2'deoxy-2'-fluoro-RNA (2'-F-RNA) has unique properties for RNA interference (RNAi) applications. Thus, 2'-F-modified nucleotides are well tolerated in the guide (antis...
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Recently, several characters that are absent from most bacteria, but which are found in many eukaryotes or archaea, have been identified within the bacterial Planctomycetes-Verrucomicrobia-Chlamydiae (PVC) superphylum. Hypotheses of the evolutionary history of such characters are commonly based on the inference of phylogenies of gene or protein families associated with the traits, estimated fro...
متن کاملNeutron Contamination Unexpected Dose in Varian LINAC
Introduction: Neutron contamination is very harmful for the patients receiving radiation therapy due to the high relative biological effect of neutrons. Medical linear accelerators head are made up of materials with high atomic numbers, and High-energy photons interaction with heavy materials can produce neutron contamination. In this study, neutron equivalent dose, neutron spe...
متن کاملUnexpected
The day dawned; he came to the ward, With son and wife, and daughter to be The harried young intern Gave an uninterested look “Routine admission, nothing much” “BP normal, pulse regular, heart in dual rhythm” “DT form fi lled, theatre list made” Anaesthetist came for the premed “Healthy gentleman, nothing to worry” “Is there a slight murmur?” “No, can’t be, the HO would have heard” Surgery goes...
متن کاملUnexpected distribution of the fluoroquinolone-resistance gene qnrB in Escherichia coli isolates from different human and poultry origins in Ecuador.
Fluoroquinolone resistance can be conferred through chromosomal mutations or by the acquisition of plasmids carrying genes such as the quinolone resistance gene (qnr). In this study, 3,309 strains of commensal Escherichia coli were isolated in Ecuador from: (i) humans and chickens in a rural northern coastal area (n = 2368, 71.5%) and (ii) chickens from an industrial poultry operation (n = 827,...
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ژورنال
عنوان ژورنال: Nature Reviews Cancer
سال: 2005
ISSN: 1474-175X,1474-1768
DOI: 10.1038/nrc1535