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Authors: Van Borm, S Wenseleers, T Billen, J Boomsma, JJ
Citation: S. Van Borm et al., Wolbachia in leafcutter ants: a widespread symbiont that may induce male killing or incompatible matings, J EVOL BIOL, 14(5), 2001, pp. 805-814

Authors: D'Hondt, E Billen, J Berghman, L Vandesande, F Arckens, L
Citation: E. D'Hondt et al., Chicken Luteinizing Hormone-Releasing hormone-I and -II are located in distinct fiber terminals in the median eminence of the quail: a light and electron microscopic study, BELG J ZOOL, 131(2), 2001, pp. 137-144

Authors: Billen, J Grasso, DA Mori, A Le Moli, F
Citation: J. Billen et al., Structural and functional changes of the Dufour gland in gynes of the amazon ant Polyergus rufescens (Hymenoptera, Formicidae), ZOOMORPHOL, 121(1), 2001, pp. 55-61

Authors: Gobin, B Billen, J Peeters, C
Citation: B. Gobin et al., Dominance interactions regulate worker mating in the polygynous ponerine ant Gnamptogenys menadensis, ETHOLOGY, 107(6), 2001, pp. 495-508

Authors: Gobin, B Ruppell, O Hartmann, A Jungnickel, H Morgan, ED Billen, J
Citation: B. Gobin et al., A new type of exocrine gland and its function in mass recruitment in the ant Cylindromyrmex whymperi (Formicidae, Cerapachyinae), NATURWISSEN, 88(9), 2001, pp. 395-399

Authors: Verhaeghe, J Billen, J Giudice, LC
Citation: J. Verhaeghe et al., Insulin-like growth factor-binding protein-1 in umbilical artery and vein of term fetuses with signs suggestive of distress during labor, J ENDOCR, 170(3), 2001, pp. 585-590

Authors: Billen, J Buschinger, A
Citation: J. Billen et A. Buschinger, Morphology and ultrastructure of a specialized bacterial pouch in the digestive tract of Tetraponera ants (Formicidae, Pseudomyrmecinae), ARTHROP STR, 29(3), 2000, pp. 259-266

Authors: Wenseleers, T Billen, J
Citation: T. Wenseleers et J. Billen, No evidence for Wolbachia-induced parthenogenesis in the social Hymenoptera, J EVOL BIOL, 13(2), 2000, pp. 277-280

Authors: Billen, J Ito, F Bolton, B
Citation: J. Billen et al., Femoral and tibial glands in the ant genus Strumigenys (Hymenoptera, Formicidae), BELG J ZOOL, 130(2), 2000, pp. 111-115

Authors: Billen, J
Citation: J. Billen, A novel exocrine gland in the antennal scape of the army ant Eciton burchelli, BELG J ZOOL, 130(2), 2000, pp. 159-160

Authors: Grasso, DA Wenseleers, T Mori, A Le Moli, F Billen, J
Citation: Da. Grasso et al., Thelytokous worker reproduction and lack of Wolbachia infection in the harvesting ant Messor capitatus, ETHOL ECOL, 12(3), 2000, pp. 309-314

Authors: Kaib, M Eisermann, B Schoeters, E Billen, J Franke, S Francke, W
Citation: M. Kaib et al., Task-related variation of postpharyngeal and cuticular hydrocarhon compositions in the ant Myrmicaria eumenoides, J COMP PH A, 186(10), 2000, pp. 939-948

Authors: Maile, R Jungnickel, H Morgan, ED Ito, F Billen, J
Citation: R. Maile et al., Secretion of venom and dufour glands in the ant Leptogenys diminuta, J CHEM ECOL, 26(11), 2000, pp. 2497-2506

Authors: Schoeters, E Billen, J
Citation: E. Schoeters et J. Billen, The importance of the spermathecal duct in bumblebees, J INSECT PH, 46(9), 2000, pp. 1303-1312

Authors: Billen, J Ito, F Peeters, C
Citation: J. Billen et al., Novel exocrine glands in the hindleg tarsi of the ant Nothomyrmecia macrops, AUST J ZOOL, 48(6), 2000, pp. 661-667

Authors: Billen, J Ito, F Tsuji, K Schoeters, E Maile, R Morgan, ED
Citation: J. Billen et al., Structure and chemistry of the Dufour gland in Pristomyrmex ants (Hymenoptera, Formicidae), ACT ZOOL, 81(2), 2000, pp. 159-166

Authors: Bennink, R Van Poppel, H Billen, J Decoster, M Baert, L Mortelmans, L Blanckaert, N
Citation: R. Bennink et al., Serum tissue polypeptide antigen (TPA): Monoclonal or polyclonal radio-immunometric assay for the follow-up of bladder cancer, ANTICANC R, 19(4A), 1999, pp. 2609-2613

Authors: Morgan, ED Do Nascimento, RR Keegans, SJ Billen, J
Citation: Ed. Morgan et al., Comparative study of mandibular gland secretions of workers of ponerine ants, J CHEM ECOL, 25(6), 1999, pp. 1395-1409

Authors: Schoeters, E Billen, J
Citation: E. Schoeters et J. Billen, The venom gland in social wasps. Comparison with the gland of the honeybeeand fat cells as possible source of venom precursor molecules, B S ZOOL FR, 124(2), 1999, pp. 183-192

Authors: Billen, J Breed, M
Citation: J. Billen et M. Breed, Untitled, INSECT SOC, 46(1), 1999, pp. NIL_1-NIL_1

Authors: Billen, J Zaman, Z Claeys, G Blanckaert, N
Citation: J. Billen et al., Limited dynamic range of a new assay for serum folate, CLIN CHEM, 45(4), 1999, pp. 581-582

Authors: Gobin, B Billen, J Peeters, C
Citation: B. Gobin et al., Policing behaviour towards virgin egg layers in a polygynous ponerine ant, ANIM BEHAV, 58, 1999, pp. 1117-1122

Authors: Billen, J Gobin, B Ito, F
Citation: J. Billen et al., Fine structure of the postpygidial gland in Aenictus army ants, ACT ZOOL, 80(4), 1999, pp. 307-310

Authors: Schoeters, E Ito, F Miyata, H Billen, J
Citation: E. Schoeters et al., Aberrant venom glands in Amblyoponini (Formicidae, Ponerinae): morphology,ultrastructure and histochemistry, ACT ZOOL, 80(1), 1999, pp. 3-9

Authors: Ito, F Billen, J
Citation: F. Ito et J. Billen, Larval hemolymph feeding and oophagy: Behavior of queen and workers in theprimitive Ponerine ant Prionopelta kraepelini (Hymenoptera, Formicidae), BELG J ZOOL, 128(2), 1998, pp. 201-209
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