TY - RPRT TI - On-line solid-phase extraction-capillary electrophoresis for enhanced detection sensitivity and selectivity: application to the analysis of metallothionein isoforms in sheep fetal liver. AU - C B Knudsen AU - J H Beattie PY - 1997 DO - 10.1016/s0021-9673(97)00857-1 UR - https://pubmed.ncbi.nlm.nih.gov/9463913/ ID - 9463913 ER -