Salmonella is a genus of rod-shaped gram-negative bacteria of the family Enterobacteriaceae. The two species of Salmonella are Salmonella enterica and Salmonella bongori. Salmonella enterica is the type species and is further divided into six subspecies that include over 2,500 serotypes. Salmonella species are non-spore-forming, predominantly motile enterobacteria with cell diameters between about 0.7 and 1.5 Âµm, lengths from 2 to 5 Âµm, and peritrichous flagella. They are chemotrophs ...
How to Use the Louvre. You are about to enter the Louvre, the worldâs largest and most-visited museum, drawing nearly 10 million people each year. It is a museum dedicated to education, with the primary mission to preserve and pass on our heritage to future generations.
by McKenna Darby. We all know the Louvre as one of the worldâs greatest art museums, but the building that houses the Venus de Milo and the Mona Lisa began, in every sense of the word, as a castle. The Louvre was built in 1190 as a watchtower and fortress. Its location â on the right bank of the Seine, at the cityâs western edge â was strategically chosen by Philip Augustus, last king of the Franks.