The cinchona tree is native to the Andean rainforest, and its bark contains an alkaloid called quinine that prevents the spread of malaria in the body. Spanish colonizers discovered the plant's ...

A laborer scrapes the bark from a cinchona tree. The bark is then sundried and pulverized to make the drug quinine. The story behind the chance discovery of the anti-malarial drug quinine may be ...

This was not an uncommon practice. Tonic water, made from the bark of the cinchona tree, contained quinine, which guarded ...

Quinine in the blood kills the plasmodium in the blood. The Dutch monopoly is important because 95% of the cinchona bark from which quinine is refined comes from Java and other oriental Dutch ...

Only a few species had bark with a high yield of quinine, but these were not easy to identify, as trees of the same species varied morphologically in different ecological conditions and hybrids ...

ALTHOUGH three centuries have elapsed since cinchona bark was introduced into European ... a century since the last of the four alkaloids—quinine, quinidine, cinchonine, and cinchonidine ...