POWER OF ATTORNEY

KNOW ALL BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints Daniel A. Camardo, Maia Hansen, and Alan Donovan 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, (1) any and all notices pursuant to Rule 144 under the
Securities Act of 1933, as amended, with respect to sales of common shares or
other securities of Athersys, Inc., including, without limitation, all notices
of proposed sale  on  Form  144,  and  (2)  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 common shares 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 notices, 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,
delivering and filing a Form ID and any ancillary agreements or documents 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, as amended, or any
 other legal requirement. This Power of Attorney shall remain in effect until
 revoked in writing by the undersigned.




Name: /s/ Neema Mayhugh


Date: 8-17-2023