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: 44.220.131.93
Time: 2024-03-28T16:14:33Z
URL: http://scholar.google.com/scholar_lookup?title=Tissue+expression+of+PD-L1+mediates+peripheral+T+cell+tolerance.&year=2006&author=Keir&journal=J+Exp+Med.&volume=203&issue=4&pages=883-895&pmid=16606670