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Fig. 11. Double-label immunohistochemistry using
-tubulin (green) and
FMRFamide (red) antibodies. In A, a dual filter shows the two colours
together. The small arrows indicate FMRFamide cell bodies and neurites, and
the large arrows indicate some of the tubulin-stained cell bodies. B and C are
from identical areas (no change in focus) with a change from a FITC filter (B)
to a TRITC filter (C). Note the neuron indicated by the arrow in B is not
present in C indicating it was immunoreactive to the tubulin antibody, but not
to FMRFamide antibody. This suggests the presence of two distinct neuronal
types in the subumbrellar segments of Aequorea.