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SEM of Staphylococcus epidermidis cluster embedded in exopolysaccharide matrix. The Gram-positive bacteria S. epidermidis and S. aureus are the most common pathogens in hospital-acquired infections. The more recent combination of extraordinary virulence and multiple antibiotic resistance in community-acquired methicillin-resistant strains of S. aureus (CA-MRSA) poses an additional severe threat to public health.
Astrobiology is the field concerned with forming theories, such as panspermia, about the distribution, nature, and future of life in the universe. In it, microbial ecologists, astronomers, planetary scientists, geochemists, philosophers, and explorers cooperate constructively to guide the search for life on other planets. [Wikipedia]
Colorized low-temperature electron micrograph of a cluster of E. coli bacteria. Individual bacteria in this photo are oblong and coloured brown. As an alternative to using antibiotics for fighting E. coli infections in newborn and weaned pigs, scientists are finding promising results from introducing mixes of beneficial bacteria, obtained from other pigs, into the gut of young pigs.
Hospital-associated Methicillin-resistant Staphylococcus aureus (MRSA) Bacteria. Interaction of MRSA (green bacteria) with a human white cell. The bacteria shown is strain MRSA252, a leading cause of hospital-associated infections in the United States and United Kingdom.