abstract human face - artificial intelligence, psychology, technology, blood flow - red and blue - 微絲血管 個照片及圖片檔
red blood cells in capillary in human scalp, in single file. shows epithelium. 400x at 35mm - 微絲血管 個照片及圖片檔
alveoli. normal human lung tissue, 100x at 35mm. shows: alveoli, thin alveolar walls (simple squamous epithelium) adapted for gas exchange, red blood cells within the pulmonary capillaries, and the extremely thin respiratory membrane. - 微絲血管 個照片及圖片檔