TY - RPRT TI - Improved chip design for integrated solid-phase microextraction in on-line proteomic sample preparation. AU - Jonas Bergkvist AU - Simon Ekström AU - Lars Wallman AU - Mikael Löfgren AU - György Marko-Varga AU - Johan Nilsson AU - Thomas Laurell PY - 2002 DO - 10.1002/1615-9861(200204)2:4<422::aid-prot422>3.0.co;2-1 UR - https://pubmed.ncbi.nlm.nih.gov/12164701/ ID - 12164701 ER -