Thanks to Kate from the Akhet website (http://www.philae.nu/akhet/index.html) for pointing out the above article to me. "Scientists in Australia's tropical north are collecting blood from crocodiles in the hope of developing a powerful antibiotic for humans, after tests showed that the reptile's immune system kills the HIV virus . . . . The scientists hope to collect enough crocodile blood to isolate the powerful antibodies and eventually develop an antibiotic for use by humans". As Kate pointed out, the Ancient Egyptians are known to have used crocodile products in their remedies, and it is an intriguing thought that through trial and error the Egyptians may have developed an understanding of some of the medicinal properties of things which are now only being rediscovered.