CDC / SCIENCE PHOTO LIBRARY CDC / SCIENCE PHOTO LIBRARY
Neisseria gonorrhoeae bacterial colonies. Light micrograph of cultured colonies of Neisseria gonorrhoeae bacteria, viewed using a Gram-stain technique. This sample is from a urethral discharge in a case of acute gonorrhoeae. N. gonorrhoeae is a Gram-negative bacterium that causes the sexually transmitted infection gonorrhoea. Symptoms include vaginal or urethral discharge and a burning sensation on urination.
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