August 6, 2009
 
VIA EDGAR AND FAX
 
Securities and Exchange Commission
Division of Corporation Finance

 
Re:
 
NeoStem, Inc.
   
Form 10-K for the Fiscal Year Ended December 31, 2008
   
Filed on March 31, 2009
File No. 001-33650
 
Dear Ms. Jenkins:
 
NeoStem, Inc. (the "Company") has received the comments of the staff (the "Staff Comments") of the Securities and Exchange Commission (the "SEC") provided by a letter dated July 24, 2009.  The Company requires additional time to respond to the Staff Comments.  The Company plans to submit a written response to the Staff Comments via Edgar no later than August 31, 2009.
 
Please do not hesitate to contact me at (212) 584-4171 with any questions or comments.  Your assistance is appreciated.
 

 
Sincerely,
NeoStem, Inc.
 
By:  /s/ Catherine M. Vaczy
Catherine M. Vaczy
Vice President and General Counsel