👉 The Beverley fluid, also known as the Beverley solution, is a complex mixture of proteins and other molecules found in the extracellular fluid surrounding cells, particularly in the brain and nervous system. Discovered by Dr. John Beverley in the early 20th century, this fluid plays a crucial role in maintaining the chemical environment necessary for proper neuronal function. It is rich in proteins such as neurofilaments, neuroligins, and neurexins, which are vital for synaptic structure and function. The fluid also contains ions like potassium, sodium, and calcium, as well as various metabolites and signaling molecules that facilitate communication between neurons. Its composition is dynamic and can change in response to physiological or pathological conditions, making it an important subject of study in neuroscience for understanding brain health and disease.