A serous fluid is a type of bodily fluid that is composed of water and proteins. LYMPH is a type of serous fluid that is found in the lymphatic system and helps to fight infection. EDEMA is a type of serous fluid that accumulates in the body's tissues, causing swelling. SERUM is a type of serous fluid that is found in the blood and helps to transport nutrients and hormones. DRAM is a unit of measurement for serous fluids. OIL is a type of serous fluid that is composed of lipids and is used for lubrication. INK is a type of serous fluid that is used for writing and printing. Ethyl is a type of serous fluid that is used as a solvent. ACID is a type of serous fluid that is used to lower the pH of a solution.