vibrio cholerae o1 are classified into two biotypes, classical and el tor based on susceptibility to bacteriophages and some biochemical properties, each encoding a biotype-specific genetic determinants. before 1961, most epidemics had been caused by the classical biotype. however, with the passage of time, the classical biotype missed from the scenario and the el tor emerged as the major bioty...

The influence of explant nodal positions on the in vitro shoot growth and proliferation were studied in the two rose cvs. ‘Bianca’ and ‘El Torro’. Third, fourth and fifth nodal explants were cultured on the modified MS medium supplemented with 1.0 and 5.0 mg/l BA. In both the cultivars, higher rate of proliferation (‘Bianca’ 3.75; ‘El Torro’ 2.65) were obtained from the explants distal to the a...

Abstract The integration of remote sensing, spectral measurements and field verification helped in discriminating new iron occurrences hosted the metavolcanic rocks at Wadi Karim Gabal El-Hadid areas Central Eastern Desert (CED) Egypt. host were carefully recognized through different image processing techniques that applied on Landsat-8 satellite data with implementation signatures various mine...

Lack of active sorption sites in sandy soils renders metals added by irrigation water more labile and increases their soil-to-plant transfer. Thus, this study investigated the long-term impacts using sewage effluents contaminated groundwater on metal accumulations TypicTorripsamment soils, edible parts food crops. Nine El-Gabal El-Asfar farm, south-eastern to Nile Delta Egypt, were selected. At...