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Rabbit Genetics

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Rabbit Genetics

The similarity between the physiology of rabbits and humans makes the rabbit a good model for research into human disease. The most prevalent types of rabbits are cottontails and European rabbits. Domestic rabbits are tame assortments of European rabbits. The Californian, Florida White, and New Zealand White are the most common breeds used in research.

Until 1912 rabbits were classified as rodents. Scientists discovered that the two types of animals differed in several distinct anatomical ways. Rabbits, for instance, have a second pair of upper incisors, known as "peg teeth," that are found behind the two main visible incisors in the upper jaw. Rabbits have elongated hind legs adapted for moving at high speeds over open areas. Rabbits generally move in a hopping motion. They also have webbed toes to keep them from spreading as they hop. Rabbits have flexible necks, which allow them to turn their heads more than rodents. Their spines are long and fragile and susceptible to fractures if the animal is held improperly.

Research

The ability to produce tumors in rabbits makes them useful models to study chemo/immunotherapy, as well as immunoprevention of certain cancers.

Cholesterol studies:

Rabbits have been used to test Probucol, a drug that lowers blood cholesterol and retards the development of hardening of the arteries.

Eye ear and skin studies:

Rabbits are used to study middle and inner ear infections, which affect millions of infants and children each year.

* Rabbits are also used to study Entropion, a condition in which the eyelashes are turned inward, as well as Glaucoma, which often results in blindness.

* Rabbits are used in eye and skin irritation tests to develop appropriate procedures for handling certain chemicals and to predict the toxicity of accidental exposure.

* More than 10,000 blind or visually impaired people have benefited from corneal transplants, possible only because of hundreds of trials on rabbits.

Drug metabolism: Rabbits have been used to study the effects of marijuana on the central nervous system.

Pregnacy Test

Presently a woman who wants to find out if she's pregnant need only make a quick trip to the local drug, grocery, or convenience store; purchase an over-the-counter home pregnancy test kit; perform a simple test; and she'll know the results within a matter of minutes.

Not so long ago, however, it was not nearly as quick or easy: Awomawho thought she might be with child had to schedule an appointment with her doctor, make a trip to his office, give a urine sample, go home, then spend an anxious couple of days

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