نتایج جستجو برای: residual toxicity
تعداد نتایج: 207892 فیلتر نتایج به سال:
insect growth regulators and spinosyns which are physiologically and ecologically selective, respectively, have been investigated as replacements or complements to non-selective conventional insecticides. the effects of diflubenzuron, hexaflumuron, profenofos, spinosad and thiodicarb were assessed on the 1st instars of cotton bollworm, helicoverpa armigera (hã¼bner) using dietary and leaf disc ...
The Clostridium difficile toxins A and B are primarily responsible for symptoms of C. difficile associated disease and are prime targets for vaccine development. We describe a plasmid-based system for the production of genetically modified toxins in a non-sporulating strain of C. difficile that lacks the toxin genes tcdA and tcdB. TcdA and TcdB mutations targeting established glucosyltransferas...
BACKGROUND The appropriate number of chemotherapy cycles for limited stage diffuse large B-cell lymphoma (DLBCL) patients without gross residual lesions after complete resection, has not been specifically questioned. We performed a multicenter, single-arm, phase 2 study to investigate the feasibility of 3 cycles of abbreviated R-CHOP chemotherapy in low-risk patients with completely resected lo...
Annually, a large amount of effluents is discharged from an industrial zone dedicated to leather industries into a dried seasonal waterway bed in Mashhad plain, Northeast of Iran. These soils are high in pH, CaCO contents and have no naturally occurring chromium detectable in mg/kg range. Considering high 3 concentration of chromium in the discharged leather industries effluents and their direc...
determination of drug residues in food is of great importance due to their toxicity. long-term exposure with low level of drug residues could be important, especially in children. based on document study, oxytetracycline (otc) is a prophylaxis and treatment agent for great number of diseases and possesses a broad spectrum activity against many pathogenic organisms and can be toxic or cause alle...
arsenic trioxide is an old drug that has recently re- introduced into new medicine. it is very potent against a specific type of leukemic cells harboring translocation between chromosomes 15 and 17. it has been demonstrated that this drug is effective against all stages of acute promyelocytic leukemia, including for remission induction of relapsed cases, or as first-line treatment. it is also u...
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