Exhibit 10.3 AGREEMENT AND PLAN OF MERGER AND REORGANIZATION This Agreement and Plan of Merger and Reorganization dated as of January 4, 1999 (this "Agreement"), is by and among LeukoSite, Inc., a Delaware corporation ("LeukoSite"), LeukoSite Merger...Merger Agreement • August 2nd, 1999 • Leukosite Inc • Pharmaceutical preparations • Massachusetts
LEUKOSITE, INC.Stock Purchase Agreement • August 2nd, 1999 • Leukosite Inc • Pharmaceutical preparations • Massachusetts
LEUKOSITE, INC.Registration Rights Agreement • August 2nd, 1999 • Leukosite Inc • Pharmaceutical preparations • Massachusetts
Exhibit 10.4 ESCROW AGREEMENT This Escrow Agreement, dated as of February 11, 1999 (this "Agreement"), is by and among LeukoSite, Inc., a Delaware corporation ("LeukoSite"), Richard Sherman and Joel Liffmann in their capacity as Stockholders'...Escrow Agreement • August 2nd, 1999 • Leukosite Inc • Pharmaceutical preparations • Massachusetts
