has subject area Animals Calorimetry - Calorimetry, Differential Scanning Cattle Chemical Phenomena - X-Ray Diffraction Chemistry Techniques, Analytical - Scattering, Radiation Chemistry Techniques, Analytical - X-Ray Diffraction Chemistry Techniques, Analytical - X-Ray Diffraction Cyclotrons Diagnostic Imaging - Microscopy, Polarization Differential Thermal Analysis - Calorimetry, Differential Scanning Exocrine Glands - Meibomian Glands Humans Investigative Techniques - Microscopy, Polarization Investigative Techniques - Rheology Lipids Physical Phenomena - Scattering, Radiation Physical Phenomena - X-Ray Diffraction Physics - Rheology Sense Organs - Meibomian Glands Tears Viscoelastic Substances Viscosity