The Herald Times Reporter, a daily newspaper in Manitowoc, Wisconsin, USA
HTR |
The head-twitch response (HTR) is a rapid side-to-side head movement that occurs in mice and rats after the serotonin 5-HT2A receptor is activated.
William H. P. Hatch, A Recently Discovered Fragment of the Epistle to the Romans, HTR 45 (1952), pp. 81-85.
W. H. P. Hatch, An Uncial Fragment of the Gospels, HTR 23 (1930), pp. 149-152.