Acetone is an biological solution often used on the surface. At the tip of 18 weeks, the three groups of mice were killed, quiz help the extent of skin tumor formation was analyzed. Conney said mice in all three groups advanced malignant skin tumors, called squamous cell carcinomas, however the variety of tumors per mouse was reduced by 72 % in those handled with caffeine quiz help by 66 % among those treated with EGCG, in comparison exam help the controls treated only with acetone. The handled mice also had fewer nonmalignant, sunlight comparable tumors, said Conney. Compared examination help the keep an eye on group of mice, the mice treated with caffeine had 44 percent fewer nonmalignant tumors, the EGCG group 55 % fewer, he said. Conney said that although both compounds were powerful in lower tumor risk, caffeine has an advantage because it is chemically more stable than EGCG.