**MERCK& CO INC, $45.95, down 2 pct. **TITAN PHARMACEUTICALS INC, $0.46, down 73 pct. **NEUTRAL TANDEM INC, $4.57, up 53 pct.
**MERCK& CO INC, $44.76, down 5 pct. **TITAN PHARMACEUTICALS INC, $0.34, down 80 pct. U.S. health regulators rejected an experimental drug to treat opioid addiction made by Titan Pharmaceuticals and asked for additional data showing it works, the company said.
*UBS raises target price to $62 from $59; rating buy. Reuters Station users, click. 1568. Reuters Station users, click. 4899.
**MERCK& CO INC, $44.76, down 5 pct. **TITAN PHARMACEUTICALS INC, $0.34, down 80 pct. **NEUTRAL TANDEM INC, $4.12, up 38 pct.
Wall Street was set for a slightly lower open on Wednesday, weighed by weak results from Merck and as investors waited to hear from the U.S. **MERCK& CO INC, Tuesday close $47, down 5 pct premarket. **CHESAPEAKE ENERGY CORP, Tuesday close $19.54, up 5 pct premarket.
NEW YORK, May 1- Sourcefire Inc:.
Wall Street was set for a flat open on Wednesday as investors waited to hear from the U.S. **MERCK& CO INC, Tuesday close $47, down 5 pct premarket. **CHESAPEAKE ENERGY CORP, Tuesday close $19.54, up 5 pct premarket.
*Jefferies raises price target to $54 from $52; rating hold. Reuters Station users, click. 1568. Reuters Station users, click. 4899.
SAN FRANCISCO, Feb 24- Dire warnings from Washington about a "cyber Pearl Harbor" envision a single surprise strike from a formidable enemy that could destroy power plants nationwide, disable the financial system or cripple the U.S. government.
SAN FRANCISCO, Feb 24- Dire warnings from Washington about a "cyber Pearl Harbor" envision a single surprise strike from a formidable enemy that could destroy power plants nationwide, disable the financial system or cripple the U.S. government.