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|   Omnimmune Corp. By: /s/ Harris A. Lichtenstein                                                                                                                     Printed Name: Harris A. Lichtenstein                                        Title: CEO                                                                                       Date: 4/27/10                                                                                   |   The Ohio State University By:  /s/  Geoffrey S. Chatas                                                   Printed Name:   Geoffrey S. Chatas                 Title: SVP Business and Finance and CFO                         Date:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
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|  The Ohio State University Research Foundation By:  /s/ Caroline Whitacre                          Printed Name:Caroline Whitacre                                               Title: Vice President for Research                                              Date:  5/21/10                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |  The Ohio State University Foundation By:  /s/ Peter B. Weiler                                                           Printed Name:Peter B. Weiler                     Title: President OSU Foundation                                          Date:  5/13/10                                                                           |
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