Liquid biopsy company Virchow Medical completed a $4 million seed financing led by Cerberus Ventures to expand access to liquid specimen collection and its biorepository approach. The company plans to complete development of the Virchow Vault and deploy Biopsy Catchment pilot programs using its Crow’s Nest system to collect residual tumor cells from discarded biopsy needles, with concordance studies running across six U.S. medical institutions.