Gil separated the crocodile blood into many parts,and put each part into a test tube.Then he put some bacteria into each test tube.The next day,he saw something amazing. In test tube number 13, all the bacteria were dead. Gil put more and more bacteria into this test tube. Each time, all the bacteria died. 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 will one day be able to use crocodillin to stop people getting sick