:::Oh (and this sort of relates to all of the last three points), you should be aware that bacteria in the gastrointestinal tract (our guts) are in most cases not under attack by the human immune system as they are technically outside of the body. Therefore evolving to overcome the host's defences is not going to have any difference, and will just be wasting energy. [[User:NormanS|NormanS]] 19:14, 24 June 2008 (EDT) | :::Oh (and this sort of relates to all of the last three points), you should be aware that bacteria in the gastrointestinal tract (our guts) are in most cases not under attack by the human immune system as they are technically outside of the body. Therefore evolving to overcome the host's defences is not going to have any difference, and will just be wasting energy. [[User:NormanS|NormanS]] 19:14, 24 June 2008 (EDT) |