CLINICAL MEDICINE

Detailed explanation-1: -The origins of the first effective chemotherapy for cancer relied both on rigorous research but also on accidental findings during World War I (WWI) when mustard gas was used as a weapon. Until then, most treatments for advanced cancer were ineffective [1].

Detailed explanation-2: -After the terrifying experiences of gas warfare during World War I, the Allied nations wanted to be ready to deploy gas weapons and defend against them if necessary. During World War II, medical scientists developed cancer chemotherapy from mustard agents because these were the poisons they knew best.

Detailed explanation-3: -Chemotherapy works against cancer by killing fast-growing cancer cells. Chemotherapy (also called chemo) is a type of cancer treatment that uses drugs to kill cancer cells.

Detailed explanation-4: -The era of chemotherapy had begun. Metastatic cancer was first cured in 1956 when methotrexate was used to treat a rare tumor called choriocarcinoma. Over the years, chemotherapy drugs (chemo) have successfully treated many people with cancer.