AMI IMAGES / SCIENCE PHOTO LIBRARY AMI IMAGES / SCIENCE PHOTO LIBRARY
MRSA ingestion by white blood cell. Coloured scanning electron micrograph (SEM) of methicillin-resistant Staphylococcus aureus (MRSA) bacteria (round) being ingested by a white blood cell. MRSA is a gram-positive, round (coccus) bacterium that is resistant to many commonly prescribed antibiotics. It is carried by around a third of the population without causing any symptoms. However, in vulnerable people, such as those that have recently had surgery, it can cause severe illness due to its high resistance to antibiotics. It can result in wound infections, pneumonia and blood poisoning.
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