Histological changes in the upper gut by CCK-A receptor antagonist administration in neonatal calves M. Biernat, P. Sysa, B. Sosak-Swiderska, I. Le Huërou-Luron, R. Zabielski and P. Guilloteau Reprod. Nutr. Dev., 39 1 (1999) 78-79 DOI: 10.1051/rnd:19990109