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Notice of Pesticide Treatment

A report provided by Pest Management Services to the area supervisor which includes observations and treatments performed. These reports are stored in the area supervisor's office.

Nude Mouse

Athymic, immune compromised mouse that has no T cells.

Nude/SCID rooms

Room that houses immunodeficient mice.


A multi-purpose detergent used to disinfect cat rooms. Use with a dark purple foamer tip.​

Observation Codes

These are codes which are to be used by lab personnel to note tumor observations in research subjects.


Observers are individuals who may be in close proximity to animals during a research or learning activity but must not handle the animals or perform any procedures.


Occupational Health Services. The U-M department responsible for providing Michigan Medicine and Ann Arbor campus faculty and staff with services for the prevention, treatment, and rehabilitation of occupational illnesses and injuries.


The Office of Laboratory Animal Welfare. OLAW is a division of the National Institutes of Health (NIH), and the regulating body for all activities funded by the federal government, including the NIH and the National Science Foundation (NSF). OLAW's primary standards are the Public Health Service Policy on Humane Care and Use of Laboratory Animals (PHS Policy), and the Guide for the Care and Use of Animals (Guide).

Old World Monkeys (OWM)

Asian monkeys including rhesus, cynomolgus, and pigtailed monkeys; or African monkeys including baboons, African green monkeys, and patas monkeys.

Opaque Cages

Cages that are not transparent but receptive to changes in light, generally used to minimize animal stress levels.


An opiate is an opioid drug such as buprenorphine, fentanyl, or morphine.


Contagious ecthyma, also known as orf or contagious pustular dermatitis, can cause crusting scabs anywhere on the body. Lesions are most frequently seen on the lips, nose, eyelids, tongue, ear, udder, and mucous membranes of sheep. In humans, the disease usually causes a firm, painful nodule on the hands or fingers. This localized lesion usually persists for 1-4 weeks.

Contagious ecthyma is transmissible to humans by direct contact with a lesion or with a contaminated fomite (e.g., bedding, equipment, manure, feed).


Surgical removal of the female reproductive organs.


In the context of the Policy on the Authority and Responsibility of the Quality Assurance Program, oversee refers to conducting reviews of approved animal activities on behalf of the IACUC to ensure that governing standards are satisfied.


Time spent providing services outside regular veterinary technician working hours (M-F 6 a.m.-5 p.m.), on weekends, and on holidays. Overtime charges will be calculated by business office personnel at a rate of 1.5 times the total time recorded during after hours/weekends/holidays.


Any oxidizer can be an element of a surgical fire including oxygen, anesthetic gases, nitrous oxide, medical air, and ambient air.


Tumors that have not reached protocol specific endpoint. This includes ulcerated tumors in protocols that allow minor ulcerations.


Recommended breeding strategy using one adult female and one adult male resulting in a single litter. Takes advantage of postpartum estrus. Pair breeding has been proven to produce significantly more pups per female when compared to trio breeding and may be less stressful for both pups and dams than trio breeding.a,b

Pair Housed

Describes primates housed such that two animals share the same cage space with full access to one another.



Pan Liner

Quilted pad placed under the brooder in the catch pan to collect waste product for easy disposal.

Panel Housed

Describes primates housed such that tactile contact is possible with another primate. This can be achieved via a panel with holes, mesh, grooming bars or other divider to limit access.


Powered Air Purifying Respirator.


Administration of substances outside of the gastrointestinal tract. Routes of parenteral administration are listed below.

  • Intravenous (IV): Administration of substances into venous circulation.
  • Intraperitoneal (IP): Administration of substances into the abdominal cavity.
  • Topical (epicutaneous): The application of substances directly to the skin for topical effect.
  • Transdermal (percutaneous): The application of substances directly to the skin for systemic effect.
  • Subcutaneous (SC): Administration of substances into the subcutaneous space.
  • Intradermal (ID): Administration of substances into the dermis.
  • Intramuscular (IM): Administration of substances into the muscle
  • Intranasal (IN): Administration of substances into the nose.
  • Intratracheal (IT): Administration of substances within the trachea.
  • Intracranial: Administration of substances into the brain.
  • Epidural (ED): Administration of substances into the epidural space.
  • Intrathecal (IT): Administration of substances into the subarachnoid space (in the spinal canal but not within the spinal cord).

Per Diem

The expenses used to maintain one animal/cage for one day.

Per os (PO)

Administration of substances by mouth.


The expenses used to maintain one animal/cage for one day.

Permanent Medical Record

A file identified by an animal's clinical number that contains all health, surgical, and/or procedural records generated for an animal. This includes:

Personal Protective Equipment (PPE)

Personal Protective Equipment (PPE) is a device or garment worn by the worker to protect against hazards. Examples of PPE include such items as gloves, foot and eye protection, face shields, protective hearing devices (earplugs, muffs), hard hats, respirators, and full body suits.


An unwanted or nuisance organism, such as rodents or insects, identified within a facility.

Pest Management Services

A section within Facilities & Operations at the University of Michigan providing facility treatment and control management plans for pests.

pH (potential of Hydrogen)

An electrical value that is the parameter for the acidity of water. Recommended level 6.8 - 7.5.

Pharmaceutical Grade

A drug, biologic, or reagent that is approved by the Food and Drug Administration (FDA) for use in humans or animals or for which a chemical purity standard has been established by the United States Pharmacopeia-National Formulary (USP-NF), or British Pharmacopeia (BP). These standards are used by manufacturers to help ensure the products are of the appropriate chemical purity and quality, in the appropriate solution or compound, to ensure stability, safety, and efficacy. The FDA maintains a database listing approved commercial formulations for human drugs (the Orange Book) and veterinary drugs (the Green Book). For chemicals, a certificate of analysis is usually available upon request. 


Any pig less than 8 weeks of age.


Pinworms are nematode parasites which have simple, direct life cycles and are frequent contaminants of both specific pathogen free (SPF) and conventional colonies of laboratory mice. Two species of pinworms that commonly infect laboratory mice are Syphacia obvelata and Aspiculuris tetraptera.

Pocket Timecard

A means to track the amount of time needed for each individual species of animal.

Polymerase Chain Reaction (PCR)

One of the tests used by the Rodent Health Surveillance Team (RHST) to determine whether a colony is contaminated.

Positive Control

Liquid cycle biological indicator that has not been autoclaved but is turned in to the Animal Diagnostic Laboratory for incubation. A color change indicates that viable spores are present in the BIs.

Positive Pressure

Room is kept at a higher pressure than the surrounding rooms/hallway, causing air to flow out of room into surrounding areas when door is opened.

Post-Operative Period

The 7 to 10 days immediately following the initial day of surgery.