Paper Chase is a research database designed to offer abstracts of research articles published in journals that have a highly rated impact factor as determined by ISI Impact Factor and PageRank. Abstracts are organized by date, with the most recently published papers listed first. 

Paper Chase

The Rat as a Possible Carrier of the Dysentery Amoeba.

Proc. Natl. Acad. Sci. U.S.A.. 5 1, 1925;11(5):239-46.
Chiang SF.

Department of Comparative Pathology, Harvard Medical School, Boston.