Net Asset Value(s)

THE BIOTECH GROWTH TRUST PLC NET ASSET VALUE The estimated un-audited net asset value, calculated in accordance with the guidelines of the Association of Investment Companies, for The Biotech Growth Trust PLC at the close of business on 24 June 2010 was 161.83p (ex and cum income). For and on behalf of the Board Frostrow Capital LLP Secretary 25 June 2010
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