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Herman Levinson (2007) Hermann Levinson (11 January 1924 in Klingenthal, Saxony, Germany – 1 November 2013) [1] was a German biologist and physiologist. He lived with his wife Anna Levinson in Starnberg and has worked at the Max Planck Institute for Behavioral Physiology since 1971, and at the Max Planck Institute for Ornithology since 2004, in Seewiesen and Erling (Upper Bavaria, Germany).
Arthur D. Levinson (born March 31, 1950) [2] is an American businessman who is the chairman of Apple Inc. [3] (2011–present) and chief executive officer (CEO) of Calico (an Alphabet Inc. venture). He is the former CEO (1995–2009) and chairman (1999–2014) of Genentech .
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Rickettsia prowazekii is a species of gram-negative, alphaproteobacteria, obligate intracellular parasitic, aerobic bacillus bacteria that is the etiologic agent of epidemic typhus, transmitted in the feces of lice.
False color scanning electron micrograph of Actinomyces israelii. Actinomyces israelii is a species of Gram-positive, rod-shaped bacteria within the genus Actinomyces.Known to live commensally on and within humans, A. israelii is an opportunistic pathogen and a cause of actinomycosis.
Klein also worked on bacteria in food and helped in establishing methods for food processing and preservation. Of the 264 scientific publications in his career nearly 200 were in microbiology. [1] [8] Ronald Ross was one of Klein's students. [9] Klein was the author of the Elements of Histology (1883). [6]
Cells of B. fragilis are rod-shaped to pleomorphic with a cell size range of 0.5–1.5 × 1.0–6.0 μm. [4] B. fragilis is a Gram-negative bacterium and does not possess flagella or cilia making it immotile.
This occurrence is when there is an imbalance of free radicals and antioxidants in the cells of the organism, largely due to pollution and radiation in the environment. Obligate aerobes survive this phenomenon by using the organism's immune system to correct the imbalance.