 ROSELAND, N.J., Jan. 06, 2021 GLOBE NEWSWIRE -- Milestone Scientific Inc. NYSE American:MLSS, a leading developer of computerized drug delivery instruments that provides virtually painless and precise injections, today raised revenue guidance to over 2 million for the fourth quarter of 2020, a 67 sequential increase over 1.2 million reported for the third quarter of 2020. 