Authors: Van Puymbroeck, M Kuilman, MEM Maas, RFM Witkamp, RF Leyssens, L Van Miert, ASJPAM Hendriks, L Vanderzande, D Adriaensens, P Jacobs, MP Raus, J

Citation: M. Van Puymbroeck et al., 17 alpha-ethyl-5 beta-estrane-3 alpha, 17 beta-diol, a biological marker for the abuse of norethandrolone and ethylestrenol in slaughter cattle, J CHROMAT B, 728(2), 1999, pp. 217-232

Authors: Van Puymbroeck, M Leyssens, L Vanderzande, D Gelan, J Raus, J

Citation: M. Van Puymbroeck et al., Metabolites in feces can be important markers for the abuse of anabolic steroids in cattle, ANALYST, 123(12), 1998, pp. 2449-2452

Authors: Van Puymbroeck, M Kuilman, MEM Maas, RFM Witkamp, RF Leyssens, L Vanderzande, D Gelan, J Raus, J

Citation: M. Van Puymbroeck et al., In vitro liver models are important tools to monitor the abuse of anabolicsteroids in cattle, ANALYST, 123(12), 1998, pp. 2453-2456

Authors: Hamoir, T Courtheyn, D De Brabander, H Delahaut, P Leyssens, L Pottie, G

Citation: T. Hamoir et al., Comparison of purification procedures for the isolation and detection of anabolic residues in faeces using gas chromatography mass spectrometry, ANALYST, 123(12), 1998, pp. 2621-2624

Authors: Leyssens, L Van Puymbroeck, M Raus, J

Citation: L. Leyssens et al., Interference of Helix pomatia extracts on the determination of methandriolin veterinary residue control analysis, ANALYST, 123(12), 1998, pp. 2643-2644

Authors: Van Puymbroeck, M Kuilman, MEM Maas, RFM Witkamp, RF Leyssens, L Vanderzande, D Gelan, J Raus, J

Citation: M. Van Puymbroeck et al., Identification of some important metabolites of boldenone in urine and feces of cattle by gas chromatography mass spectrometry, ANALYST, 123(12), 1998, pp. 2681-2686