Authors: Scheef, G Fischer, N Krach, U Tonjes, RR

Citation: G. Scheef et al., The number of a U3 repeat box acting as an enhancer in long terminal repeats of polytropic replication-competent porcine endogenous retroviruses dynamically fluctuates during serial virus passages in human cells, J VIROLOGY, 75(15), 2001, pp. 6933-6940

Authors: Krach, U Fischer, N Czauderna, F Tonjes, RR

Citation: U. Krach et al., Comparison of replication-competent molecular clones of porcine endogenousretrovirus class A and class B derived from pig and human cells, J VIROLOGY, 75(12), 2001, pp. 5465-5472

Authors: Krach, U Fischer, N Czauderna, F Kurth, R Tonjes, RR

Citation: U. Krach et al., Generation and testing of a highly specific anti-serum directed against porcine endogenous retrovirus nucleocapsid, XENOTRANSPL, 7(3), 2000, pp. 221-229

Authors: Tonjes, RR Czauderna, F Fischer, N Krach, U Boller, K Chardon, P Rogel-Gaillard, C Niebert, M Scheef, G Werner, A Kurth, R

Citation: Rr. Tonjes et al., Molecularly cloned porcine endogenous retroviruses replicate on human cells, TRANSPLAN P, 32(5), 2000, pp. 1158-1161