Dense granule-containing cells in the wall of the branchio-cardiac veins of a fresh water crayfish (Astacus leptodactylus).
The anatomical structure of oxygen-sensitive receptors in branchio-cardiac veins of a crayfish (Astacus leptodactylus) was studied with fluorescence and electron microscopy. Fluorescent cells were observed in the wall of a restricted part of the branchio-cardiac veins which was electrophysiologically shown to be a chemoreceptor region. Electron microscopy disclosed that they were dense granule-containing cells, and form, together with supporting cells and nerve terminals, complex structures that show gross similarities with arterial chemoreceptor structures in vertebrates.
Kusakabe
T
T
Department of Anatomy, Yokohama City University School of Medicine, Japan.
Ishii
K
K
Ishii
K
K
D000818:Animals; D003400:Astacoidea / Q000033:anatomy & histology*; D002628:Chemoreceptor Cells / Q000502:physiology; D003594:Cytoplasmic Granules / Q000648:ultrastructure*; D008854:Microscopy, Electron; D008856:Microscopy, Fluorescence; D014680:Veins / Q000166:cytology / Q000648:ultrastructure*