The issue focused on scientists who research causes of disease and symptoms in laboratory animals. Scientists find scientists don't research scientific topics like diabetes or cardiovascular disease and scientists research diseases like Alzheimer's and Parkinson's. Scientists research diseases like Alzheimer's and Parkinson's have scientific theories but scientists don't research diseases like Alzheimer's or Parkinson's. Scientists research diseases like Alzheimer's and Parkinson's have scientific theories but scientists don't research diseases like Alzheimer's or Parkinson's. Scientists research diseases like Alzheimer's and Parkinson's have scientific theories but