ACETYLSALICYLIC, ACID, ANALGESIC, ARTHRITIS, ASPIRIN, BIOLOGY, CHEMISTRY, CRYSTAL, CRYSTALS, DRUG, FEVER, HEADACHE, HEALTH, INFLAMMATION, MAGNIFIED, MARTIN, MEDICAL, MEDICINE, MICRO, MICROGRAPH, MICROGRAPHS, MICROGRAPHY, MICROSCOPIC, PAIN, PATHOLOGY, PATTERN, PATTERNS, PHARMACEUTICAL, PHYSIOLOGY, POLARIZED, RELIEF, RESEARCH, ROTKER, SCIENCE, TEM, THERAPY, TOOTHACHE,