Invitation

Filed by Tutogen Medical, Inc.
Pursuant to Rule 425 under the Securities
Act of 1933 and deemed filed pursuant to
Rule 14a-6 under the Securities Exchange
Act of 1934
Subject Company: Regeneration Technologies, Inc.
Commission File No.: 0-31271

Forward Looking Statements

This communication contains “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Such statements include but are not limited to statements about the expected benefits of the business combination involving Regeneration Technologies, Inc. and Tutogen Medical, Inc., including potential synergies and cost savings, future financial and operating results, and the combined company’s plans and objectives. In addition, except for historical information, any statements made in this communication about Tutogen’s anticipated financial results, growth rates, new product introductions, future operational improvements and results, regulatory approvals or changes to Tutogen’s agreements with its distributors also are forward-looking statements. Forward-looking statements are subject to risks and uncertainties, including the ability of Regeneration Technologies and Tutogen to integrate their businesses successfully and to realize the expected synergies and cost savings from the merger and the risks described in Tutogen’s public filings on file with the Securities and Exchange Commission. Actual results may differ materially from anticipated results reflected in these forward-looking statements. Copies of Tutogen’s S.E.C. filings may be obtained by contacting the company or the S.E.C. or by visiting Tutogen’s website at www.tutogen.com or the S.E.C.’s website at www.sec.gov.

Important Additional Information and Where to Find It

The proposed merger will be submitted to the respective stockholders of Regeneration Technologies and Tutogen for their consideration, and Regeneration Technologies and Tutogen will file a registration statement, a joint proxy statement/prospectus and other relevant documents concerning the proposed transaction with the S.E.C. Shareholders are urged to read the registration statement and the joint proxy statement/prospectus regarding the proposed merger when it becomes available and any other relevant documents filed with the S.E.C., as well as any amendments or supplements to those documents, because they will contain important information. You will be able to obtain a free copy of the joint proxy statement/prospectus, as well as other filings containing information about Regeneration Technologies and Tutogen, at the S.E.C.’s Internet website (http://www.sec.gov). You will also be able to obtain these documents, free of charge, at Regeneration Technologies’ website (http://www.rtix.com) or Tutogen’s website (http://www.tutogen.com). Copies of the joint proxy statement/prospectus and the S.E.C. filings that will be incorporated by reference in the joint proxy statement/prospectus can also be obtained, without charge, by directing a request to Thomas F. Rose, Vice President and CFO, Regeneration Technologies Inc., PO Box 2650, Alachua, FL 32616 or to L. Robert Johnston, CFO, Tutogen Medical, Inc., 13709 Progress Blvd., Box 19, Alachua, FL 32615.

Regeneration Technologies and Tutogen, and their respective directors and executive officers, may be deemed to be participants in the solicitation of proxies from the stockholders of Regeneration Technologies and Tutogen in connection with the proposed merger. Information about the directors and executive officers of Regeneration Technologies and their ownership of Regeneration Technologies common stock is set forth in the proxy statement, dated March 30, 2007, for Regeneration Technologies’ annual meeting of stockholders, as filed with the S.E.C. on a Schedule 14A. Information about the directors and executive officers of Tutogen and their ownership of Tutogen common stock is set forth in the proxy statement, dated February 5, 2007, for Tutogen’s annual meeting of stockholders, as filed with the S.E.C. on a Schedule 14A. Additional information regarding the interests of those participants and other persons who may be deemed participants in the merger may be obtained by reading the joint proxy statement/prospectus regarding the proposed merger when it becomes available. You may obtain free copies of these documents as described in the preceding paragraph.

The following is email for invitation to Analyst Meeting for the Merger Announcement.


Regeneration Technologies, Inc. and Tutogen Medical, Inc. will be hosting an analyst lunch meeting to discuss details of the RTIX-TTG merger. During the meeting, Brian Hutchison of RTI and Guy Mayer of Tutogen will provide an overview of the proposed combined company and the benefits it will bring.

 

When:    Wednesday, November 14, 2007
  

12 p.m. – 1 p.m. ET

Location:    Henry Salon, The New York Palace Hotel
  

455 Madison Avenue, New York, NY

RSVP to IR@rtix.com or call (352) 262-4402.

The analyst meeting will also be available as a live audio Web cast, including slide presentation and simultaneous conference call. The conference call can be accessed by dialing 888-426-8928, passcode RTIX. The Web cast can be accessed through the investor section of RTI’s Web site at www.rtix.com. A replay of the Web cast will be available through February 12, 2008 and can be accessed through www.rtix.com.