CISTRON BIOTECHNOLOGY <CIST> SETS DIVIDEND Cistron Biotechnology Inc said it will pay a stock dividend declared prior to the initial public offering of its common stock in August 1986 to stockholders of record prior to the common offering. Payment of the dividend was contingent on the closing bid price of the common stock averaging two dlrs or more per shares for the trading days within any consecutive ten day period ending before February 29, 1988. The company said that the contingency has been fulfilled. Payment of the stock dividend increases Cistron's outstanding common stock to 21,390,190 shares from 16,185,354 shares.