About this page

Our systems have detected unusual traffic from your computer network. This page checks to see if it's really you sending the requests, and not a robot. Why did this happen?

IP address: 44.203.219.117
Time: 2024-03-28T19:15:25Z
URL: http://scholar.google.com/scholar_lookup?title=Mechanism+of+antigen-driven+selection+in+germinal+centres&year=1989&author=Liu&journal=Nature&volume=342&issue=6252&pages=929-931&doi=10.1038%2F342929a0&pmid=2594086