and the other sad part is that ......., animals are not always like humans
...... tey do not suffer from all human diseases, so scientists have to give them the illnesses artificially.
de.. joints in rabbit legs are inflamed with chemicals to help research in rheumatism (my mom helped me to find this out)
dhese tests do not always work because animals do not react to drugs in the same way as humans.
Aspirin, for example damages pregnant mice and dogs, but not pregnant women.
Arsenic, which is a deadly poison for humans, has no effect on sheep, while penicillin, which is so valuable to humans, kills guinea pigs
......