POWER OF ATTORNEY
KNOW BY THESE PRESENTS, that the undersigned hereby constitutes and appoints
Katherine Serevitch, Barb Cameron and Alan Donovan, and each of them, as the
true and lawful attorney or attorneys-in-fact, with full power of substitution
and revocation, for the undersigned and in the name, place and stead of the
undersigned, in any and all capacities, to execute, on behalf of the
undersigned, any and all statements or reports under Section 16 of the
Securities Exchange Act of 1934, as amended, with respect to the beneficial
ownership of shares of common stock, par value $0.001 per share, or other
securities of Athersys, Inc., including, without limitation, all initial
statements of beneficial ownership on Form 3, all statements of changes in
beneficial ownership on Form 4, all annual statements of beneficial ownership
on Form 5 and all successor or similar forms, to be filed with the Securities
and Exchange Commission, to execute any and all amendments or supplements to
any such statements or reports, and to file the same, with all exhibits
thereto, and other documents in connection therewith, with the Securities and
Exchange Commission, granting to said attorney or attorneys-in-fact, and each
of them, full power and authority to do so and perform each and every act and
thing requisite and necessary to be done in and about the premises
(including, without limitation, completing, executing and delivering a Form ID
to apply for electronic filing codes), as fully and to all intents and purposes
as the undersigned might or could do in person, and hereby ratifying and
confirming all that said attorney or attorneys-in-fact, or any of them, or
their substitute or substitutes, may lawfully do or cause to be done by virtue
hereof. The undersigned acknowledges that the foregoing attorneys-in-fact, and
each of them, in serving in such capacity at the request of the undersigned,
are not assuming any of the responsibilities of the undersigned to comply with
 Section 16 of the Securities Exchange Act of 1934 or any other legal
requirement. This Power of Attorney shall remain in effect until revoked in
writing by the undersigned.



___/s/ Maia Hansen_________________________
Name: Maia Hansen


Date:  June 21, 2022