On the other hand, there is an underlying question of how effective testing human products on animals could possibly be. There are numerous differences in human tissue versus animal tissue. Animals do not respond in the same manner as humans. Substances that …show more content…
The first of these subcategories is the testing of medical procedures and devices. Animals are used both to develop new procedures and devices and to test the effectiveness of those that already exist. Using animals in this area has allowed numerous medical advancements, including the development of pacemakers and heart valves. In early testing, valves were transplanted from one animal to another, effectively testing the new procedure. For instance, a heart valve was transferred from a goat to a dog. Because of these procedures, scientists have made progress, improving the performance and durability of valves. Heart valves and similar devices have saved the lives of many people around the