Ten to fifteen years is the average time between finding the plant, [identifying its exact use] and patenting it into a drug [so] it is a long-term investment.
They inserted the human insulin gene into the common safflower plant, which churns out the drug for a fraction of the cost.
他们将人类胰岛素基因植入普通的红花植物中即可产出胰岛素，但成本只是一小部分。
3
WHO recommends combinations that contain derivatives of artemisinin — a substance extracted from the plant Artemisia annua — along with another effective antimalarial drug.