ASTRID & HANNS-FRIEDER MICHLER / SCIENCE PHOTO LIBRARY ASTRID & HANNS-FRIEDER MICHLER / SCIENCE PHOTO LIBRARY
Neisseria gonorrhoeae. Light micrograph showing a sample of cells whose nuclei are small and blue infected by Neisseria gonorrhoeae bacteria (tiny red and round), the causative agent of gonorrhoea. Neisseria gonorrhoeae are Gram-negative cocci (round shaped) bacteria with a diameter of about 0. Gonorrhoea is one of the most common sexually transmitted diseases. It has a short incubation period of two to ten days; it is treated with an antibiotic, usually a penicillin drug. Treatment for gonorrhoea is effective but does not protect against reinfection. Magnification: x270 at 35mm size.
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