The Federation Cup National Senior Athletics Championships have been postponed and will be held here from June 1-4 instead of May 11-14 as scheduled earlier, the national federation said on Saturday. English
Bacterial smears are prepared for the purpose of viewing microorganisms under the microscope. Visualization of microorganisms in the living state is very difficult, not just because they are minute, but because they are transparent and almost colorless when suspended in an aqueous medium. A bacterial smear is a dried preparation of bacterial cells on a glass slide. Smears may be made from a dry culture (from a slant, stab or plate), or from a wet/liquid culture. In preparing bacterial smears, the following qualities must be observed: 1.
Gram-positive bacteria. Gram-positive bacteria are bacteria that give a positive result in the Gram stain test, which is traditionally used to quickly classify bacteria into two broad categories according to their cell wall. Gram-positive bacteria take up the crystal violet stain used in the test, and then appear to be purple-coloured when seen through a microscope. This is because the thick peptidoglycan layer in the bacterial cell wall retains the stain after it is washed away from the rest of the sample, in the deco