COLUMBIA, Md. ( TheStreet) -- Osiris Therapeutics ( OSIR) CEO Randy Mills, speaking to investors on his company's first-quarter conference call Tuesday morning about Prochymal, a stem cell therapy for graft-versus-host disease:

We have made Prochymal by far -- by far -- the most widely used stem cell drug in the world. So, we regularly and constantly treat patients now on four different continents and are literally treating a patient with Prochymal anywhere around the world at any given time of the day.

Prochymal is the most widely used stem cell drug in the world? Really?

Mills has a different definition of "widely used" than most investors.

Prochymal sales since the stem cell drug was approved in Canada in May 2012 and New Zealand in June 2012: $0.

Reimbursement process in Canada: Incomplete.

Update on Prochymal confirmatory trial, which is required as part of Canadian approval: Incomplete.

Status of long-delayed plans to submit Prochymal for U.S. approval: On permanent hold.

-- Reported by Adam Feuerstein in Boston.

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