WHAT: Mayo Clinic is hosting a grand opening event for the Richard O. Jacobson Building, home to the Mayo Clinic proton beam therapy program. The new facility will begin treating patients in late June. Reporters will have a chance to tour the facility, take photos and video and interview experts.

* Information on proton beam therapy: http://www.mayoclinic.org/proton-beam-therapy/about-proton-therapy •* Information on Mayo Clinic proton beam therapy program: http://www.mayoclinic.org/proton-beam-therapy/our-program

WHERE: Richard O. Jacobson Building, 190 2nd Street NW, Rochester, Minn.

WHEN: Saturday, May 9, 2015, 11 a.m. to 3 p.m.

WHO: Interviews available with Robert Foote, M.D., chair, Radiation Oncology, Mayo Clinic in Rochester. Sameer Keole, M.D., medical director, medical director of Mayo Clinic's Proton Beam Therapy Program.

RSVP: Maureen Wegner, [email protected], 507-293-3677

MEDIA CONTACT:Joe Dangor, Mayo Clinic Public Affairs, 507-284-5005, [email protected]

About Mayo Clinic Cancer CenterAs a leading institution funded by the National Cancer Institute, Mayo Clinic Cancer Center conducts basic, clinical and population science research, translating discoveries into improved methods for prevention, diagnosis, prognosis and therapy. For information on cancer clinical trials, call 507-538-7623.

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About Mayo ClinicMayo Clinic is a nonprofit organization committed to medical research and education, and providing expert, whole-person care to everyone who needs healing. For more information, visit http://mayocl.in/1ohJTMS, or http://newsnetwork.mayoclinic.org/.