• Merck and Co. Inc., of Whitehouse Station, N.J., entered into a nonexclusive deal with Bristol-Myers Squibb Co., of New York, to conduct a Phase II trial of a once-daily oral combination regimen consisting of BMS' NS5A replication complex inhibitor daclatasvir and Merck's NS3/4A protease inhibitor MK-5172 to treat chronic hepatitis C virus infection genotype 1.