Applied DNA Sciences Now on Twitter and Launches New Blog on ADNAS.COM

STONY BROOK, NY--(Marketwire - June 4, 2009) - Applied DNA Sciences, Inc. (OTCBB: APDN), a provider of DNA security solutions, announced today that it is now on Twitter and has launched its "Reality Check" blog on its website ADNAS.com. Through both venues, APDN will review trends, policies, news, products and innovations and provide commentary on current anti-counterfeiting and anti-diversion concerns, as well as the latest forensic and alternative solutions to protect brands and industries from global fraud and illicit crime.

"We're a dynamic and innovative company and we are increasing our presence and reach to a larger, global audience," stated Debbie Bailey, Director of Investor Relations. "Our online portal provides people all around the world with a way to connect with us. Our content will benefit consumers who are concerned with the quality, integrity and authenticity of the products and brands to which they subscribe. Manufacturers, brand owners and governments will find the portal essential to foiling counterfeiters."

Brand security and protection is increasingly becoming part of the business process, and companies are struggling to identify the best technologies to fight against counterfeiting and diversion. APDN's increased social media strategy will assist companies in quickly finding and applying DNA solutions that best meet their security needs.

About APDN

APDN sells patented DNA security solutions to protect products, brands and intellectual property from counterfeiting and diversion. SigNature DNA is a botanical mark used to authenticate products in a unique manner that essentially cannot be copied. APDN also provides BioMaterial GenoTyping™ by detecting genomic DNA in natural materials to authenticate finished products. Both technologies protect brands and products in a wide range of industries and provide a forensic chain of evidence that can be used to prosecute perpetrators. To learn more, go to www.adnas.com.

The statements made by APDN may be forward-looking in nature and are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements describe APDN's future plans, projections, strategies and expectations, and are based on assumptions and involve a number of risks and uncertainties, many of which are beyond the control of APDN. Actual results could differ materially from those projected due to our short operating history, limited financial resources, limited market acceptance, market competition and various other factors detailed from time to time in APDN's SEC reports and filings, including our Annual Report on Form 10-K, filed on December 16, 2008 and our subsequent quarterly reports on Form 10-Q. APDN undertakes no obligation to update publicly any forward-looking statements to reflect new information, events or circumstances after the date hereof to reflect the occurrence of unanticipated events.

Contact Information: INVESTOR CONTACT: Debbie Bailey 631-444-8090 fax: 631-444-8848/ MEDIA CONTACT: Janice Meraglia 631-444-6293 fax 631-444-8848 FCMN Contact: Web site: http://www.ADNAS.com