👉 The calling fluid, also known as the "callus fluid," is a clear, viscous substance produced by the body's connective tissues during inflammation or healing processes. It plays a crucial role in transporting nutrients, oxygen, and immune cells to the affected area, facilitating tissue repair and regeneration. This fluid is generated by specialized cells called fibroblasts and is rich in proteins, growth factors, and other molecules that aid in the healing process. The presence and composition of calling fluid can provide valuable diagnostic information about the nature and severity of an injury or disease, making it a significant component in medical diagnostics and treatment planning.