The symbiotic intestinal ciliates and the evolution of their hosts

S.Y. Moon-van der Staay, G.W.M. Van der Staay, T. Michalowski, J.-P. Jouany, P. Pristas, P. Javorský, S. Kišidayová, Z. Varadyova, N.R. McEwan, C.J. Newbold, T. Van Alen, R. de Graaf, M. Schmid, M.A. Huynen, J.H.P. Hackstein