Progress in biology and medicine requires a lot of 
experiments
, including experimentation on Use synonyms
animals
, which brings out a discussion in the public with two opposite attitudes regarding Use synonyms
this
 topic. There are a lot of reasons for carrying out in vivo Linking Words
experiments
, but Use synonyms
also
 some of them could be avoided because of alternatives. 
Investigation of medicines and drugs is a long and demanding process Linking Words
due to
 the fact that in the end, the human will be a customer of Linking Words
this
 product, and researchers should be assured that a new-investigated drug has few side effects and does not have any harmful effects on the human body. The Linking Words
clinic
 stage of  drug research demands the testing of a system influence of that agent, which is implemented by using laboratory Replace the word
clinical
animals
. These results could be projected on a human organism with  Use synonyms
further
 analysis and  implementation  in clinical practice. Linking Words
However
, laboratory Linking Words
animals
 are protected by laws of bioethics. Use synonyms
This
 discipline legislates basic rules about the raising of lab Linking Words
animals
 and requirements for an experiment. Use synonyms
Therefore
, the risk of any harm to laboratory species goes down.
Linking Words
Nevertheless
, there are alternatives, but only in cosmetics, because Linking Words
this
 field of research does not require the investigation of side and system effects. Linking Words
For example
, nowadays there is  artificial skin, that consists of  epithelium, which is  identical analogy of human tissue. It is widely utilized by cosmetic factories in a lot of developed countries, which leads to a reduction of  Linking Words
animals
 in Use synonyms
experiments
. 
Use synonyms
To sum up
, human health demands sacrifices, Linking Words
such
 as the utilisation of lab Linking Words
animals
, which is an unreplaceable stage in some Use synonyms
experiments
 in the pharmaceutical field. Use synonyms
However
, there are some alternatives, Linking Words
such
 as artificial skin, which can be used in a wide range of the testing of cosmetic products, avoiding in vivo Linking Words
experiments
.Use synonyms