2 Results for polio vaccines

In the 1950's, summertime was a time of fear for many parents. Summertime was the season when children by the hundreds became infected with the crippling disease "poliomyelitis". This fear was finally lifted when it was announced that Dr. Jonas Salk had developed a vaccine against the disease. Salk...
Do we own animals...or do we simply care for them as pets and use them in our experiments and research? What distinguishes a pet from a lab/test animal..What characteristics make them any different from each other? Do the tests we do actually have significance and how far can we take them? ...