Cinchona succirubra, a variety of quina tree also known as Cinchona pubescens, on a government plantation in Sikkim, India, 1866.Cinchona trees are native to South America but were transferred to ...

Several species of the Cinchona tree (which was called “quina-quina” by the Indians) grow on the warm, moist slopes of the Andes above 1,500 metres, where the Anopheles mosquito does not ...

Quinine and its chemical derivatives are derived from the bark of the South American quina-quina tree. Artemisinin is isolated from a variety of wormwood. Both medicines, ...

The native people had long boiled pieces of the quina tree's very hard bark to cure the disease or to reduce the reoccurring fevers. It killed the parasites that are introduced by the malaria ...

He realized the water must have been contaminated by the neighboring quina-quina tree. He thought he was poisoned, but to his surprise, his fever abated. Ever since, extracts of the bitter bark of the ...

Malaria, a mosquito-borne parasitic infection that affects about 3.2 billion people in 95 countries, has become largely a disease of the young and poor.

Quina lithic technology indicates diverse Late Pleistocene human dynamics in East Asia. Proceedings of the National Academy of Sciences , 2025; 122 (14) DOI: 10.1073/pnas.2418029122 Cite This Page : ...