That creature is a mouse and it is used for scientific research into finding a cure for cancer in humans. The use of animals in research and experimentation fails to apply to humans, due to their different biology, stresses they encounter in lab conditions and the manner with which tests are introduced to the animal. (Fano 24)

Just as people react differently to chemicals depending on various factors, animal test results vary widely according to the species, sex, age, diet, stress level, and strain of the animal. For example, Benzidine has caused bladder cancer in humans and dogs, and liver and mammary tumors in rats. (Glaberson 1) Unfortunately, in this instance and many more just like it, animal testing proved to be inaccurate and wasteful.

Some conclusions drawn from animal experimentation can make quite horrific reading. Another example being the studies done on arsenic and it's potential for causing cancer. While numerous epidemiological studies have proven that arsenic causes cancer in

In addition to in-vitro tests, there are live tissue equivalents (such as artificial skin and corneas), phosphorescent bacteria which can detect chemical irritants, light-based bio-sensors which can measure cellular injury and recovery, and computer-based structure-activity relationships, such as the MetabolExpert and HazardExpert, which feed mathematical models of chemicals' molecular structures into computers to predict toxicity. (Lab Animal Welfare n.pg.)

"Rats readily associate food with illness and will avoid a food of they have been ill after eating it," (Escalante, Interview) In this case, the gavage method would be necessary in order to perform a test where something would have to be ingested by the rat.

Unfortunately, closed-mindedness, and bureaucracy have prevented these methods from being used in the regulatory arena. (ANZCCART Humane Science n.pg.)

It is disturbing to think about cats sliced and wired for brain research, or spinal-cord injuries deliberately inflicted on monkeys. It's enlightened to want humane treatment for those animals-and the mice and rats that make up 90 percent of animals used in labs. With organizations such as People For The Ethical Treatment Of Animals (PETA), Physicians' Committee for Responsible Medicine (PRCM), and new age computer programs available as an alternative to animal testing, hopefully one day there will be no animal suffering in lab with an unnatural disease or a cruel test being inflicted on them. (Lab animal welfare n.pg.)

humans, toxicologists now acknowledge that arsenic rarely, if ever, causes cancer in animals. Rats, for example, are remarkably resistant to the chemical and develop none of the illnesses-liver, bladder, kidney, and skin cancer-observed in humans. (Brink 66)

Escalante, Linda. SPCA Employee. 12/16/00.

However, arsenic is not the only concern. There are currently 85,000+ chemicals on the market-dyes, insecticides, refrigerants, chemi

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