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Figure 1. Confocal immunofluorescence optical sections of a fresh-water protozoa, Euplotes euryslOmus. The
cells were perrneabilized and probed with monoclonal antibodies specific for post-translational modified
carboxy terminal tryosine-tubulin (A) or unmodified carboxy terminal glutamic-tubulin (C). A and C
are CLSM immunofluorescence images; Band C, phase contrast images of the respective animals. The
anti-tyr tubulin is found at the base of the cirri and membranelles whereas the anti-glu tubulin epitope
is found throughout the cirri and membranelles and surrounding the macro- and micro nuclei.
rapidly growing field. In Figure 1 are shown confocal fluorescence images and phase contrast
laser scan images of a fresh-water unicellular Euplores eurystomus stained with monoclonal
antibodies to alpha-tubulin isotypes (Olins et al., 1989). This example demonstrates the
necessity of spatial as well as quantitative fluorescence information for structural and
physiological analysis of such organisms.
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