Allentown's (Allentown, NJ) Bio-Containment Unit (BCU) comes in both rat and mouse varieties. The mouse version comes in two lines, the BCU-1000 (42 cages, single-sided) and the BCU-2000 (98 cages ...

(Moderator) "We rarely see this problem in rats but relatively often in mice, especially in C57Bl/6 and Tg strains with C57Bl/6. It seems to be worse if the animals are nervous or have litters. Since ...