Instead we can use models to look at the functions of genes involved in maintaining healthy organisms in order to obtain vital clues about the causes and progression of human diseases. (fishforscience.org)
It has been found that as we age the number of healthy organisms in the large intestine starts to decline, upsetting this delicate balance, which influences both immune function and digestive health. (nowfoods.com)
For most healthy organisms, a wide range of acceptable amounts exists. (darwinspet.com)