BIOG 1106 - Unit 4 Slides / slide 15

Slide 15.

E. coli bacteria. Colored scanning electron micrograph (SEM) of Escherichia coli (E. coli) bacteria. These Gram-negative bacilli (rod-shaped) bacteria are normal inhabitants of the human intestine, and are usually harmless. However, under certain conditions their numbers may increase to such an extent that they cause infection. They cause 80% of all urinary tract infections, travelers' diarrhea, particularly in tropical countries & gastroenteritis in children. They are also widely used in genetic research. Magnification: x8600 at 6x7cm size. Credit: Andrew Syred / Photo Researchers, Inc.	Color enhanced scanning electron micrograph (SEM) of E. coli bacteria. Escherichia coli is a normal inhabitant of the human intestine. However, its numbers may increase and could cause diarrhea and urinary tract infections. SEM 75,000x at 35 mm. Credit: Dr. Gary Gaugler / Photo Researchers, Inc.
Color enhanced shadow-cast transmission electron micrograph (TEM) of the bacteria Escherichia coli. E. coli is found in the human intestinal tract and is normally non-pathological. Certain strains can cause severe food poisoning and has led to outbreaks resulting in numerous deaths worldwide. Credit: Biophoto Associates / Photo Researchers, Inc.	Color enhanced SEM of a negatively stained Escherichia coli K12 strain. The colon bacillus E. coli is a short, plump, gram negative, non spore-forming, motile bacilli almost constantly present in the alimentary canal of man where it is normally nonpathogenic. E. coli is responsible for infections in other systems and for enteritis in infants. Certain enteropathogenic strains are a principal cause of traveler's diarrhea. Magnification: x6,250 at 35 mm. Credit: Kwangshin Kim / Photo Researchers, Inc.