Good thing you got a reply. Most of the people that i emailed didn't even bother telling me to piss off. I saw a couple of people got in wustl. I hope I can hear something from them. Why do you guys want to go from chem E to bme?
i don't really think 'inviting' the prof's would make a difference. Usulally when you pick a concentration, your application would go to the specific faculty in this area.