lipofuscin is found in the cytoplasm of mammalian cells and in chloroplasts of
plant cells. The mounting and embedding material may also exhibit low
amounts of autofluorescence. Although sample preparation methods are avail-
able to reduce autofluorescence [21], computational background subtraction,
described later, can prove to be a very effective method for correction.
12.4.2.3 Absorption and Scattering
Absorption and scattering of light are the most common causes of optical
aberrations observed in fluorescence imaging. Light at both the excitation and
emission wavelengths can be scattered due to particles, refracted due to inter-
faces, or absorbed by the specimen material itself. This typically occurs due to
(1) the presence of particles in the specimen ...