1 EXHIBIT 4.1 NEORX CORPORATION SHARE PURCHASE AGREEMENT SHARE PURCHASE AGREEMENT, dated as of April __, 2000, between NeoRx Corporation, a Washington corporation (the "Company"), and the purchaser listed on Schedule A attached hereto (the...Share Purchase Agreement • April 24th, 2000 • Neorx Corp • In vitro & in vivo diagnostic substances • Washington
