gil separated the crocodile blood into many parts, and put each part into atest tube . then he put some nacteria into each test tube. the next day ,he sew something amazing .in test tube 13 ,all the bacteria were dead. gil put more and more bacteria into this test tube .each time ,all the bacteria died.gil knew there was something special in test tube 13 . he called it crocodillin. adam and gil hope that doctors willone day be able to use crocodillin to stop people getting sick.