EXHIBIT 10.21 Warrant Agreement Dated as of April 9, 2003 WARRANT AGREEMENT, dated as of April 9, 2003, between BioTime, Inc., a California corporation (the "Company"), and the persons named on Exhibit A (the "Lenders"). The Lenders have granted the...Warrant Agreement • April 14th, 2003 • Biotime Inc • Biological products, (no disgnostic substances) • California
