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Fig. 9. On some anterior cardiac plexi (ACPs), blister-like protuberances are
evident. In some preparations, the ACPs contain multiple blister-like
protuberances of the sheath that are densely packed with
FLRFamide-immunopositive profiles. In this example, numerous protuberances are
present, several of which are indicated with arrows. This image is a brightest
pixel projection of 36 optical sections taken at 2.0 µm intervals. Scale
bar, 100 µm.