Sharing is not just caring, it's also about giving credit - add this image to your page and give credit to the talented photographer who captured it.:
mucosa nasal epithelium villus villi enterocyte respiratory cell nose mucus columnar anatomy smell sense olfactory system vector oral epithelial intestine sinus lumen cilia allergy colon ciliated inflammation gut pharynx stomach diagram disease anatomical bronchial medical duodenum microvilli allergic small breath basal sensory bronchioles spray histology infection rhinitis cylindrical