Table of Contents

Papers

97 - Preference of laboratory rats for potentially enriching stimulus objects
D.J. Chmiel, Jr. & M. Noonan

102 - Isolation of Enterococcus durans and Pseudomonas aeruginosa in a scid mouse colony
H. M. Dietrich, D. Khaschabi & B. Albini

108 - Comparison of the proportions of oral bacterial species in BALB/c mice from different suppliers
L. Rodrigue & M. C. Lavoie

114 - Detection and in vivo transmission of rat orphan parvovirus (ROPV)
Y. Ueno, F. Sugiyama & K. Yagami

120 - Enhancement of respiratory immunity to Pasteurella multocida by cholera toxin in rabbits
M. A. Suckow, T. L. Bowersock, K. Nielsen & C. F. Grigdesby

127 - Variable expression of human transgenes in SHN mice
H. Nagasawa, M. Mizuno, M. Hasegawa & T. Harigaya

132 - Successful vitrification of stroke-prone spontaneously hypertensive and normal Wistar rat 2-cell embryos
M. Sato, K. Yokokawa, K. Kasai & N. Tada

138 - Incidence of spontaneous post-implantation deaths in CFT- Swiss mice: its suitability to assess dominant lethal mutations
Muralidhara & K. Narasimhamurthy

143 - Effects of crude fibre level in the diet on the intestinal morphology of growing rabbits
B. Yu & P. W. S. Chiou

149 - Strain-specific response to hypercholesterolaemic diets in the rat
A. Bottger, M. den Bieman, Lankhorst, H. A. van Lith & L. F. M. van Zutphen

158 - Influence of unsuccessful lactation on subsequent reproduction and age of onset of mammary tumours in SHN mice
S. Tsunoda & H. Nagasawa

162 - Monitoring and controlling reproduction in captive common marmosets on the basis of urinary oestrogen metabolites
C. Nievergelt & C. R. Pryce

171 - Improved procedures for maintaining and breeding the short-tailed fruit bat (Carollia perspicillata) in a laboratory setting
J. J. Rasweiler IV & N. K. Badwaik

182 - Oral endotracheal intubation of rabbits (Oryctolagus cuniiculus)
A. Davies, M. Dallak & C. Moores

184 - Book reviews

187 - Notes & comments

xliv - Calendar of events