TY - CONF A1 - Weidner, Steffen A1 - Falkenhagen, Jana A1 - Schulze, Rolf-Dieter A1 - Thünemann, Andreas T1 - Sample spot heterogeneity investigated by MALDI-imaging mass spectrometry T2 - 57th ASMS Conference On Mass Spectrometry and Allied Topics T2 - 57th ASMS Conference On Mass Spectrometry and Allied Topics CY - Philadelphia, PA, USA DA - 2009-05-31 PY - 2009 AN - OPUS4-19191 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -