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

A variant CRISPR-Cas9 system adds versatility to genome engineering.

Proc. Natl. Acad. Sci. U.S.A.. Sep 24, 2013;110(39):15514-5.
Walsh RM, Hochedlinger K.

Howard Hughes Medical Institute, Massachusetts General Hospital Center for Regenerative Medicine/Cancer Center, Boston, MA 02114.