Expressing an Opinion - 2(Revised)

Do you support that researchers use animals in laboratory experiments? In my opinion, I regard it as a cruel thing. First of all, it is not fair for the animals because they still have their rights. Owing to the activity, there must be many protesters who are against the behavior for the rights of the animals in the law. Moreover, the results of the animals in the experiments which are conducted by the researchers don't always correspond to those are done on people. If the consequence on people doesn't meet the results done on animals, then the animals are the sacrifice of the experiments. Eventually, the animals' gene is possibly changed during the experiments. If some animals escape one day, then they may reproduce their generation and develop strange genes. That will cause a big problem for other creations to be disturbed by the mutant animals. For the views above, it is very improper for researchers to perform the experiments on animals.