EXHIBIT 4.6 REGISTRATION RIGHTS AGREEMENT This Registration Rights Agreement (the "Agreement") is made and entered into as of this 27th day of September, 2000 by and between Supergen, Inc., a Delaware corporation (the "Company"), and the "Seller"...Registration Rights Agreement • December 20th, 2000 • Supergen Inc • Pharmaceutical preparations • Delaware
EXHIBIT 4.1 SUPERGEN, INC. TWO ANNABEL LANE, SUITE 220 SAN RAMON, CALIFORNIA 94583 AVI BIOPHARMA, INC. ONE SW COLUMBIA, SUITE 1105 PORTLAND, OR 97258 REGISTRATION RIGHTS AGREEMENTRegistration Rights Agreement • December 20th, 2000 • Supergen Inc • Pharmaceutical preparations • Delaware
