Merck KGaA Cancer Drug Erbitux Seen Limited Threat To Roche Holding AG and Genentech, Inc. Avastin
LONDON, June 2 (Reuters) - Roche Holding AG shares jumped while Merck KGaA fell on Monday as investors decided rival drug Erbitux posed no immediate threat to Roche and Genentech Inc's cancer blockbuster Avastin.