Exhibit 4.2 THIS WARRANT AND THE SHARES OF COMMON STOCK THAT ARE ISSUABLE UPON EXERCISE OF THE WARRANT MAY NOT BE SOLD, OFFERED FOR SALE, PLEDGED OR OTHERWISE TRANSFERRED UNLESS SUCH TRANSFER IS REGISTERED OR QUALIFIED UNDER THE SECURITIES ACT OF...Warrant Agreement • June 16th, 2003 • Biopure Corp • Biological products, (no disgnostic substances) • Delaware
