Gametocytes - transmission stages of malaria parasites.
The malaria parasite employs an effective trick: it forces transmission from human to human as soon as the conditions in the host deteriorate. An international research team has discovered the molecule that plays a key role in this process. Malaria parasites are both dangerous and versatile. On entering the human bloodstream, they multiply exponentially. The blood stages of the infection cause all the complications associated with this devastating disease. However, uninhibited proliferation of these asexual forms would be fatal for the parasite: it has to be transmitted to the next person before the resources of its current host are exhausted. For that reason, the parasite transitions from an asexual to a sexual stage.
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