%0 Book Section %T Influence of Small Phase Variations in the Diffraction Pattern of a Biological Cell publisher SPIE--The International Society for Optical Engineering. %D 1985 %U 9780892525706 %@ https://hdl.handle.net/20.500.14352/65484 %X In preceding works, a theoretical model has been introduced for the transmission function of a biological cell, in which the physical effects of the three transmission functions for the cytoplasm, the nucleus and the cellular membrane have been considered and studied1. Since biological cells are generally objects having small phase variations, we introduce this specific characteristic in the proposed theoretical model, in the present work, Its Fourier transform is numerically analyzed. %~