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: 44.197.108.187
Time: 2024-03-29T12:21:19Z
URL: http://scholar.google.com/scholar_lookup?title=Blood-brain+barrier%3A+penetration+of+morphine%2C+codeine%2C+heroin%2C+and+methadone+after+carotid+injection&year=1972&author=Oldendorf&journal=Science&volume=178&issue=4064&pages=984-986&doi=10.1126%2Fscience.178.4064.984&pmid=5084666