title: TWO-EXPOSURE, FILM DENSITOMETRIC METHOD MEASURING PHASE RETARDATIONS DUE TO WEAK BIREFRINGENCE IN FIBRILLAR OR MEMBRANOUS CELL CONSTITUENTS.
mesh_terms: D055592:Biophysical Phenomena; D001703:Biophysics; D001718:Birefringence; D003720:Densitometry; D006652:Histological Techniques; D010781:Photography; D010783:Photometry; D012106:Research
keywords: BIOPHYSICS; BIREFRINGENCE; DENSITOMETRY; EXPERIMENTAL LAB STUDY; HISTOLOGICAL TECHNICS; PHOTOGRAPHY; PHOTOMETRY