The term CLINIC SUPPLY can be broken down into two crossword solutions: SWABS (5 letters) and SERUMS (6 letters). SWABS are small pieces of absorbent material, such as cotton, used to collect samples for testing or to apply medication. Serums are clear liquid solutions that contain antibodies and other proteins that are used to treat or prevent diseases. Both SWABS and serums are commonly used in medical clinics and hospitals to diagnose and treat patients.