Robin Roberts celebrates 100 days since transplant

"Good Morning America" co-host Robin Roberts says she's reached a "major milestone" in her bone marrow transplant recovery.

Roberts, who underwent the transplant to treat MDS, a blood and bone marrow disease, celebrated 100 days since her surgery on Saturday.

She celebrated the big day by being reunited with her dog KJ, who was being taken care of by friends while she recovered.

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