“The enzyme lysozyme in tears and saliva kills bacteria, and skin oils contain fatty acids that inhibit gram-positive bacteria. If those defenses… — Anne E. Maczulak Copy Share Image
“that a given bacterial species caused a specific disease. In 1876, Koch established a set of criteria that a bacterium must meet in test… — Anne E. Maczulak Copy Share Image
“Pasteur had received an honorary degree from the University of Bonn in 1868, but returned it later during the height of French-German tension. “Today… — Anne E. Maczulak Copy Share Image
“Guesswork plays a part in these estimates. Bacteria exist 40 miles above the Earth and 7 miles deep in the ocean, and most of… — Anne E. Maczulak Copy Share Image
“During a rabies scare in 1885, Pasteur concocted a treatment and gave the untested drug to a nine-year-old boy, Joseph Meister, who had been… — Anne E. Maczulak Copy Share Image
“The pH rises in the intestines and bacterial numbers increase a millionfold from about 1,000 cells per gram of stomach contents, which to a… — Anne E. Maczulak Copy Share Image
“commented on the future of antibiotic drugs. Perhaps, Fleming mused, a time would come when anyone with real or perceived illness could get penicillin.… — Anne E. Maczulak Copy Share Image
“around, some microbiologists have suggested that classifying bacteria by species is futile. It seems as if all bacteria belong to one mega-species, and different… — Anne E. Maczulak Copy Share Image
“Skin bacteria in these places degrade the sweat’s sebaceous oils to a mixture of small fatty acids and nitrogen- and sulfur-containing compounds, all of… — Anne E. Maczulak Copy Share Image
“Venter concluded from a two-year study of marine microbes that for every 200 miles of ocean, 85 percent of the species, judged by unique… — Anne E. Maczulak Copy Share Image
“No one knows the number of bacterial species. About 5,000 species have been characterized and another 10,000 have been partially identified. Biodiversity authority Edward… — Anne E. Maczulak Copy Share Image
“(Courtesy of BioVir Laboratories, Inc.) Three years after Koch and Hesse switched to agar-based media, another assistant in the laboratory, Richard J. Petri, designed… — Anne E. Maczulak Copy Share Image
“Communities contain a messaging system in which identical cells or unrelated cells respond to each other and change their behavior. This adaptation is called… — Anne E. Maczulak Copy Share Image
