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 Cultivation of Treponemata from the Blood of Normal Monkeys (Macacus Rhesus) and from the Blood of Monkeys Infected with Yellow Fever.

Proc. Natl. Acad. Sci. U.S.A.. 3 1, 1930;16(3):222-8.
Sellards AW.

Department of Tropical Medicine, Harvard Medical School.