Do all laboratory mice trace back to a single female?

A Review of Mycoplasma in Laboratory Mice

Mycoplasma are small, cell-free bacteria enclosed by a membrane. These bacteria belong to the class of Mollicutes, the order of Mycoplasma tales, and the genus of Mycoplasma. There are more than 100 identified species of mycoplasma. The ratio of cytosine to guanine in its DNA is 23–40% and its genome size is 1350–600 kb. Mycoplasma require cholesterol to grow, and the temperature su...

Laboratory Monitoring: Back to Basics

PROLOGUE For a variety of reasons, students often consider themselves unprepared to interpret common laboratory values on clerkship rotations. The preceptor, and usually the student, realizes that a general understanding of common laboratory values is needed to practice in settings where such values are available. There is a tremendous amount of information concerning laboratory monitoring, but...

Litter size predicts adult stereotypic behavior in female laboratory mice.

Stereotypic behaviors are repetitive invariant behaviors that are common in many captive species and potentially indicate compromised welfare and suitability as research subjects. Adult laboratory mice commonly perform stereotypic bar-gnawing, route-tracing, and back-flipping, although great individual variation in frequency occurs. Early life factors (for example, level of maternal care receiv...

Back-up detection devices: what do we all need to know? Dangerous blind zones.

Tracefs: A File System to Trace Them All

File system traces have been used for years to analyze user behavior and system software behavior, leading to advances in file system and storage technologies. Existing traces, however, are difficult to use because they were captured for a specific use and cannot be changed, they often miss vital information for others to use, they become stale as time goes by, and they cannot be easily distrib...