A Korean delegation dispatched to the U.S. to check on the safety of U.S. beef exported here made a series of visits to the Animal and Plant Health Inspection Service in Maryland and the National Veterinary Services Laboratories in Iowa on Tuesday and Wednesday.

Officials were briefed about a case of mad cow disease confirmed at a cattle farm in California on April 20.

The delegation will stay in the U.S. until May 8 and hopes to visit slaughterhouses and fodder factories in California, but there is reportedly disagreement over what the delegation wants to see and what its U.S. hosts want to show it. Some criticize lack of preparation as the delegation was hurriedly dispatched amidst mounting public concerns here.

The delegation plans to travel to California on Thursday and also visit the Dairy Food Safety Laboratory at the University of California, Davis where the body of the infected cow is stored.