PURE Bioscience Set to Join Russell Microcap Index

SAN DIEGO, Calif., June 17, 2008 – PURE Bioscience (NASDAQ: PURE) will join the Russell Microcap Index when Russell Investments reconstitutes its family of U.S. indexes on June 27, according to a preliminary list of additions posted Friday on www.russell.com.

Membership in the Russell Microcap Index, which remains in place for one year, means automatic inclusion in the appropriate growth and value style indexes.  Russell determines membership for its equity indexes primarily by objective, market-capitalization rankings and style attributes.

Michael L. Krall, President and CEO of PURE Bioscience, stated, “Being included in this leading benchmark index is an important milestone for Pure and will help increase our visibility within the investment community as we continue to execute our strategic business plan.”

Russell indexes are widely used by investment managers and institutional investors for index funds and as benchmarks for both passive and active investment strategies. An industry-leading $4.4 trillion in assets currently are benchmarked to them.

Annual reconstitution of Russell indexes captures the 4,000 largest U.S. stocks as of the end of May, ranking them by total market capitalization to create the Russell 3000® Index and Russell Microcap. These investment tools originated from Russell's multi-manager investment business in the early 1980s when the company saw the need for a more objective, market-driven set of benchmarks in order to evaluate outside investment managers.

Total returns data for the Russell Microcap and other Russell Indexes is available at www.russell.com/Indexes/performance/daily_total_returns_us.asp.

About Russell

Russell Investments aims to improve financial security for people by providing strategic advice, world-class implementation, state-of-the-art performance benchmarks, and a range of institutional-quality investment products. With more than $213 billion in assets under management, Russell serves individual, institutional and advisor clients in more than 40 countries. Russell provides access to some of the world’s best money managers.  It helps investors put this access to work in corporate defined benefit and defined contribution plans, and in the life savings of individual investors.

Founded in 1936, Russell is a subsidiary of Northwestern Mutual Life Insurance Company.  Headquartered in Tacoma, Wash., U.S., Russell has principal offices in Amsterdam, Auckland, Johannesburg, London, Melbourne, New York, Paris, San Francisco, Singapore, Sydney, Tokyo and Toronto.

About PURE Bioscience

PURE Bioscience develops and markets technology-based bioscience products that provide solutions to numerous global health challenges, including Staph (MRSA). PURE's proprietary high efficacy/low toxicity bioscience technologies, including its silver dihydrogen citrate-based antimicrobials, represent innovative advances in diverse markets and lead today's global trend toward industry and consumer use of "green" products while providing competitive advantages in efficacy and safety.  Patented SDC is an electrolytically generated source of stabilized ionic silver which formulates well with other compounds.  As a platform technology, SDC is distinguished from competitors in the marketplace because of its superior efficacy, reduced toxicity and the inability of bacteria to form a resistance to it.  PURE is headquartered in El Cajon, California (San Diego metropolitan area).  Additional information on PURE is available at www.purebio.com. 

This press release includes statements that may constitute "forward-looking" statements, usually containing the words "believe," "estimate," "project,” "expect" or similar expressions. These statements are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements inherently involve risks and uncertainties that could cause actual results to differ materially from the forward-looking statements. Factors that would cause or contribute to such differences include, but are not limited to, acceptance of the Company's current and future products and services in the marketplace, the ability of the Company to develop effective new products and receive regulatory approvals of such products, competitive factors, dependence upon third-party vendors, and other risks detailed in the Company's periodic report filings with the Securities and Exchange Commission. By making these forward-looking statements, the Company undertakes no obligation to update these statements for revisions or changes after the date of this release.