Cathepsin-D expression in the cytoinvasive stages of coccidia in the intestinal mucosa of chickens, and the relevance of this proteinase for the intracellular penetration and spread of coccidia in host tissues - Koďousek, Rostislav; Bedrník, Petr; Černík, P; Kubeš, Oldřich (Biomedical papers of the Medical Faculty of the University Palacký, Olomouc Czech Republic, 2001)