Description

Paramecium-Ingestion (200x) /Digestion (100x) , Hydra (11x) , Planaria(3x) , Earthworm (7x) , Grasshopper-Mouthparts (1x) , Frog Intestine (20x) , Villi (50x) /Intestinal Glands (125x) , Human-Large intestine (400X)