👉 Cists are small, round structures that are formed in the digestive tract during the process of digestion. They are composed mainly of acidified bile and contain a mixture of proteins, lipids, and other substances that help to break down food into smaller particles for easier absorption into the bloodstream. Cists are also known as "cystic filaments" or "bile ducts," and they play a significant role in the digestive process by helping to maintain the pH balance in the stomach and small