Exhibit 17.3

GARY CURTIS CANNON

ATTORNEY AT LAW

11497 Tree Hollow Lane

San Diego, CA 92128-5287

_____________________

Telephone (858) 391-9083  Facsimile (858) 391-9084

email: gcannon@GaryCurtisCannonAttorney.com

May 4, 2009

Larry Stambaugh

Chairman of the Board

Cryoport, Inc.

20382 Barents Sea Circle

Lake Forest, CA 92630

Re: Resignation from the CryoPort, Inc. Board of Directors

Dear Larry,

I resign my position on the Board of Directors for CryoPort, Inc. It has been a pleasure to serve with so many fine individuals.

Sincerely,

/s/ Gary Curtis Cannon

Gary Curtis Cannon

Attorney at Law

GCC/dc

Cc: File