Tommy Thompson, the former Wisconsin governor who also served as secretary of the U.S. Dept. of Health & Human Services under President George W. Bush, stepped down from the board of directors at Organ Transport Systems Inc.

Thompson said changes in his schedule left him with no choice but to tender his resignation from the Frisco, Texas-based maker of technology used to preserve the viability of organs during transplant.

Organ Transport Systems is a wholly-owned subsidiary of Allezoe Medical Holdings Inc. (OTC:ALZM), having been acquired by that Burbank, Calif.-based company in June 2010.

Thomspon, a former presidential candidate for the GOP nomination in 2008, took the time in his resignation letter to refute a report by Breakaway Stocks that had Thompson on Allezoe’s board.

“I am not, nor have I ever been, on the Board of Directors of Allezoe Medical Holdings Inc.,” Thompson wrote. “Thus, the reference to me in the attached e-mail came as a significant surprise to me and obviously is in error. I am sending a letter directly to Allezoe to demand that it cease and desist all use of my name and/or references to me immediately.”