A strange male mouse was introduced into a female’s cage within 24 hours of mating with her normal mate. When checked 12 days later by ultrasound, she was not pregnant. Which of the following effects most likely occurred?

There is a test tube with no label, it can be water, aldehyde, ketone, or methyl ketone. Using the following test results, label test tube A? Unknown   2,4-DNPH Test      Iodoform Test          Tollen’s Test     A         _____ (+)_____   ______ (-)______       ______ _(-)_______  

What is the term used when a behaviorally dominant mouse chews the hair off of other mice?

Which outbred stock of rat is commonly used in research and is also called the hooded rat?

A strain is considered inbred after at least _____ generations of brother-sister mating.

Which of the following routes for chemical euthanasia is adjunctive ONLY?

You have 200 mls of drug.  You need a final volume of 1200 mls.  What is the ratio for the dilution you are creating?

Which of the following genetically engineered rodents lack mature T cells, B cells, NK cells, and are deficient in multiple cytokine signaling pathways?

Which of the following is the most common hamster used in research?

Healthy animals placed in each cage (microenvironment) along with other animals being used in the study for the purpose of detecting disease are called: