Joint Filer Information

Names: Deerfield Capital L.P., Deerfield Special Situations Fund, L.P., Deerfield Management Company, L.P., Deerfield Special Situations Fund International Limited

Address:  Deerfield Capital, L.P., Deerfield Special Situations Fund, L.P. and Deerfield Management Company, L.P.:

780 Third Avenue, 37th Floor

New York, NY  10017

Deerfield Special Situations Fund International Limited:

c/o Citi Hedge Fund Services (B.V.I.) Ltd.

Bison Court, P.O. Box 3460

Road Town, Tortola, D8,

British Virgin Islands

Designated Filer:  James E. Flynn

Issuer and Ticker Symbol:  Fibrocell Science, Inc. (FCSC)

Date of Event Requiring Statement:  August 16, 2010

The undersigned, Deerfield Capital, L.P., Deerfield Special Situations Fund, L.P., Deerfield Management Company, L.P. and Deerfield Special Situations Fund International Limited are jointly filing the attached Statement of Changes in Beneficial Ownership on Form 4 with James E. Flynn with respect to the beneficial ownership of securities of Fibrocell Science, Inc.

Signatures:

DEERFIELD CAPITAL, L.P.
By:	J.E. Flynn Capital LLC, General Partner
By:	/s/ James E. Flynn
	James E. Flynn, President

DEERFIELD SPECIAL SITUATIONS FUND, L.P.
By:	Deerfield Capital, L.P., General Partner
By:	J.E. Flynn Capital LLC, General Partner
By:	/s/ James E. Flynn
	James E. Flynn, President

DEERFIELD MANAGEMENT COMPANY, L.P.
By:	Flynn Management LLC, General Partner
By:	/s/ James E. Flynn
	James E. Flynn, President

DEERFIELD SPECIAL SITUATIONS FUND INTERNATIONAL LIMITED
By:	/s/ James E. Flynn
	James E. Flynn, Director