The Mayo Clinic Blood Center is in need of O+ blood, the clinic said Wednesday morning.

Blood donations are done at the Hilton Blood Donor Center in downtown Rochester.

Call (507) 284–4475 to schedule an appointment.

The donor center is open 6 a.m. to 4:30 p.m. Monday through Friday.

Parking for donors is south of the Hilton building, in Lot No. 6.