The present study shows that the immunofluorescence procedure can be used
equally successfully to demonstrate decorated microtubules in the osteoblast layer on
the other (outer) surfaces of certain fish scales. This paper deals mainly with the
marked examples of intercellular microtubule alignment that have been found in the
fibroblast and osteoblast layers associated with the scales of two cypriniform teleosts.
The spatial relationships of these microtubule alignments with respect to the location
of centrosomal microtubule-organizing centres and supracellular patterns of extracellular
matrix deposition have been explored.