1 EXHIBIT 4.2 THESE SECURITIES HAVE BEEN ACQUIRED FOR INVESTMENT AND HAVE NOT BEEN REGISTERED UNDER THE U.S. SECURITIES ACT OF 1933. THEY MAY NOT BE SOLD, OFFERED FOR SALE OR TRANSFERRED EXCEPT IN ACCORDANCE WITH THE PROVISIONS OF THIS WARRANT AND...Warrant Agreement • November 22nd, 1999 • Matritech Inc/De/ • In vitro & in vivo diagnostic substances • Delaware
1 EXHIBIT 4.1 COMMON STOCK AND WARRANT PURCHASE AGREEMENT DATED AS OF NOVEMBER __, 1999Common Stock and Warrant Purchase Agreement • November 22nd, 1999 • Matritech Inc/De/ • In vitro & in vivo diagnostic substances • Delaware
