searching for new medicines (Summarized)

This is a small Summarized about searching for new medicines in unit 2 for level 4 reading book.

Every year the diseases is more widespread,and the scientists discovered new medicines of new plants.Sometime this medicines make people more power and sometime not.Drug for malaria was found for four hundred years ago a Spanish priest was sent to native Indians for teaching and he learned also make a powder from the bark of the cinchona tree and used to cure malaria and send some of Europe and they used a lot.By 1827 quinine's was commercially produced and become primary.
After scientists discovered in China plant called wormwood.Modern scientists identified salicylic acid as the special ingredient in the bark,and today,aspirin is one of the most widely used drugs in the world.Over 1oo companies that manufacture drugs are searching for new rainforest plants and testing them for possible medical use.
The scientists want time to find plants that might cures diseases.Most modern drugs made from plants came from simple cures that village healers created from nearby plants.
Drug companies are also sending teams of workers into the rainforests to gather plants to test.
Scientists want to gather as many medical secrets as possible.