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  • Schizogony

    Asexual reproductive stage of malaria parasites. In red blood cells, schizogony entails development of a single trophozoite into numerous merozoites. A similar process happens in infected liver cells.1

  • Schizont

    A developmental form of the malaria parasite that contains many merozoites. Schizonts are seen in the liver-stage and blood-stage parasites.1

  • Sequelae

    Morbid conditions following as a consequence of a disease.1

  • Side effects

    Any undesired actions or effects of a drug or treatment. Negative or adverse effects may include headache, nausea, hair loss, skin irritation, or other physical problems. Experimental drugs must be evaluated for both immediate and long-term side effect.5

  • Splenomegaly

    Enlargement of the spleen. Found in some malaria patients. Splenomegaly can be used to measure malaria endemicity during surveys (e.g., in communities or in schoolchildren).1

  • Sporozoite

    A stage in the life cycle of the malaria parasite. Sporozoites are produced in the mosquito and migrate to the mosquito’s salivary glands. They can be inoculated into a human host when the mosquito takes a blood meal on the human. In the human, the sporozoites enter liver cells where they develop into the next stage of the malaria parasite life cycle (the liver stage or exo-erythrocytic stage).1