Diseases, Conditions, Syndromes

What to know about malaria

Malaria is caused by a single-celled parasite of the genus Plasmodium. The parasite is transmitted to humans most commonly through mosquito bites. The malaria parasites enter the bloodstream and travel to the liver. When ...

Immunology

How the immune system learns from harmless particles

Our lungs are bombarded by all manner of different particles every single day. While some are perfectly safe for us, others—known as pathogens—have the potential to make us ill. The immune system trains its response whenever ...

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