TY - JOUR T1 - Negative and positive ion matrix-assisted laser desorption/ionization time-of-flight mass spectrometry and positive ion nano-electrospray ionization quadrupole ion trap mass spectrometry of peptidoglycan fragments isolated from various Bacillus species JO - J MASS SPECTROM PY - 2001/02/01 AU - Bacher G AU - Korner R AU - Atrih A AU - Foster SJ AU - Roepstorff P AU - Allmaier G ED - VL - 36 IS - 2 SP - 124 EP - 139 Y2 - 2024/12/22 ER -