CARMIEL, Israel--(BUSINESS WIRE)--Protalix BioTherapeutics, Inc. (Amex: PLX), today announced that on June 27th, 2008, the Company was added to the Russell Microcap Index as part of the Russell Investment Group’s reconstitution of its family of U.S. indexes. Membership in the Russell Microcap Index, which remains in place for one year, results in automatic inclusion in the appropriate growth and value style indexes. The Russell Investment Group determines membership for its equity indexes primarily by objective, market-capitalization rankings and style attributes.