Stock filament counters aren’t always very accurate, but you can roll your own filament counter from an old mouse. [Bin Sun]’s build is based around an old ball-type PS/2 mouse, the kind with ...

During a routine examination of our department's animal husbandry unit, we found a female Swiss albino mouse with an extremely distended abdomen (Fig. 1). This 6-month-old mouse, which was ...