BOSTON, MA - March 03, 2006 - KLD Indexes announced today that it added Gen-Probe Incorporated to the Domini 400 Social^SM Index (DS 400 Index). KLD Indexes is a division of KLD Research & Analytics, Inc., an independent investment research firm providing services for institutional investors and money managers who integrate environmental, social, and governance factors into their investment decisions.

         Gen-Probe (NASD: GPRO) was added after the close of trading February 24, 2006. KLD Indexes added Gen-Probe because it provides a critical health service: the development and production of blood screening and diagnostic tests for HIV/AIDS, tuberculosis, strep throat, pneumonia, fungal infections, and West Nile virus. The company has also demonstrated a commitment to its employees by distributing stock options to all employees and to diversity by promoting a woman to a senior line position.

Summary of changes to KLD's Domini 400 Social Index - February 24, 2006

About KLD's Domini 400 Social Index

         KLD's Domini 400 Social Index is a float-adjusted market capitalization weighted common stock index modeled on the S&P 500^® Index. The DS 400 Index is the first benchmark for equity portfolios subject to multiple social screens. It is a widely recognized benchmark for measuring the impact of social screening on financial returns and the performance of socially screened portfolios.

About KLD Indexes

         KLD Indexes, a division of KLD Research & Analytics, Inc., constructs indexes for investors who integrate environmental, social and governance factors into their investment decisions. Investors, trustees and consultants depend on the quality and integrity of KLD Indexes, which are designed to be transparent, representative and investable. Today, more than $10 billion is invested in funds based on KLD's family of indexes, including the Domini 400 Social^SM Index, KLD Select Social^SM Index, KLD Global Climate 100^SM Index, KLD Broad Market Social^SM Index and KLD Large Cap Social^SM Index.

         For more information about KLD's Indexes, please see our website (www.KLDIndexes.com) or contact Chris McKnett by phone (617.426.5270 x218) or e-mail (cmcknett@kld.com).