Deinococcus radiodurans, strange berry that withstands radiation, formerly called Micrococcus radiodurans, is an extremophilic bacterium, and is the most radio resistant organism known. While a dose of 10 Gy is sufficient to kill a human, and a dose of 60 Gy is sufficient to kill all cells in a culture of E. coli, D. radiodurans [...]

ENVIRONMENTAL FACTORS For bacteria to grow and multiply most rapidly, certain requirements must be met. First of this requirement is sufficient food of the proper kind must be present. Then moisture must be available. The temperature must be that most suitable for the species. Likewise, the proper degree of alkalinity or acidity must be present. [...]

Classification We have heard stories about people who got sick because of bacterial infection. But what is this organism that causes severe ailment when let untreated? Bacteria (sing., bacterium) are minute unicellular microorganisms, the smallest ones having all the necessary protoplasmic equipment for growth and self-multiplication at the expense of available foodstuffs. Bacteria can be [...]

Plan of Action The microbiologist may study employ different laboratory equipment like the microscope in the study of microbes. He may study the microbes in various ways. Generally, there are five standard procedures being followed or the identification and evaluation of microbes in the microbiologic laboratory. First in the procedure is through direct microscopic examination. [...]

Size Bacteria are so small (no larger than 1/50,000 of an inch*) that the highest magnification of the ordinary compound microscope must be used to study them. Cocci range from 0.4 to 2 µtn. (/j,) in diameter. The smallest bacillus is about 0.5 µm. in length and 0.2 µmL in diameter. The largest pathogenic bacilli [...]

Staining Bacterial cells are so small that, when examined in hanging drop preparations, little of their finer structure can be made out to be studied more closely. They must be colored with some dye. This process is called staining. The dyes most often used are aniline dyes which are derivatives of the coal tar product [...]

Take interest, I implore you, in those sacred dwellings which one designates by the expressive term: laboratories. Demand that they be multiplied, that they be adorned. These are the temples of the future-temples of well-being and of happiness. There it is that humanity grows greater, stronger, better. – Louis Pasteur One of the favorite places [...]

Among many intracellular bacteria, it has been found out through bacteria identification that Listeria monocytogenes presents a rather uncharacteristic way of destroying the host cells. Many deadly microbes have learned that the key to launching an infection is not to kill your host – at least not too quickly.Scientists at the University of California, Berkeley, [...]

This is an article that relates bacterial communication and virulence factor production with bacterial polyphosphate. Stanford researchers through bacteria identification have found that the polyphosphate inside cells may be involved in determining how dangerous bacteria harm plants, humans and other animals. Polyphosphate is a chain like molecule found in every living cell. In animals, one [...]

This is an article about bacteria found to be following the species area relationship. The article discusses about the nature of bacteria, being the most common organism on earth. They can be found almost everywhere in nature. In bacteria identification, there are an estimated 100 billion kinds of bacteria. Melissa Lage and Jennifer Hughes, along [...]