Adverb sentence: or a start, If animals were used for vaccines that are for safety reasons for humans to use, I would go with it because of the safety reasons for humans to live and be safe around the community. It could save a life using a vaccine on an animal getting results to use the vaccine on a human. But also I think it should be certain animals that people don't own like rats, mice, any other animals that might be a pest or people don't like.
The W start sentence: While I can understand the animals may get hurt, it can save a human's life by testing the animal first to make sure it is okay to use the vaccine on a human.
The semicolon: I think everyone will be safe from being sick and getting viruses if the animals get tested before testing a human first that could get affected badly.
Very short sentence: Think about whose lives you could save from testing this on an animal.
