Protein biomarker company Proteome Science has placed 13.86m shares at 18p each, raising £2.5m before expenses.The proceeds will be used to increase capacity and shorten lead times ensuring the company can continue to meet the significant increase in demand for its biomarker services from a growing list of international clients and for general working capital purposes.Executive chairman Christopher Pearce subscribed for 1.8m, while Vulpes Investment Management Private, a substantial shareholder, subscribed for 2.59m.