Exhibit 10.20 PLACEMENT AGENT'S UNIT PURCHASE WARRANT WARRANT TO PURCHASE _____________ UNITS EACH CONSISTING OF TWO SHARES OF COMMON STOCK AND ONE WARRANT TO PURCHASE ONE SHARE OF COMMON STOCK AT AN INITIAL EXERCISE PRICE OF $2.50 PER SHARE VOID...Placement Agent's Unit Purchase Warrant • March 17th, 1998 • Alfacell Corp • Biological products, (no disgnostic substances) • Delaware
