. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 106 D. J. BIRD AND A. F. EBLE OEP IEP. FIGURE 6. Diagram of secondary lamella of an adult eel. Pillar cells (PC) and their cytoplasmic flanges (PCF) delimit blood spaces (BS) within lamella. Two-cell layered epithelium supported by basement membrane (BM) covers secondary lamella. Nuclei (NU) of the inner epithelium (IEP) are more flattened than those of the outer epithelial cells (OEP) and lie over pillar-cell bodies. Scale bar is 5 /mi. RESULTS General morphology Gills of the eel consist of four bony gill arches on either s
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 106 D. J. BIRD AND A. F. EBLE OEP IEP. FIGURE 6. Diagram of secondary lamella of an adult eel. Pillar cells (PC) and their cytoplasmic flanges (PCF) delimit blood spaces (BS) within lamella. Two-cell layered epithelium supported by basement membrane (BM) covers secondary lamella. Nuclei (NU) of the inner epithelium (IEP) are more flattened than those of the outer epithelial cells (OEP) and lie over pillar-cell bodies. Scale bar is 5 /mi. RESULTS General morphology Gills of the eel consist of four bony gill arches on either side of the pharynx. Gill arches bear two rows of flattened filaments supported for approximately two- thirds of their length by cartilagenous gill rays. Filaments each bear two rows of secondary lamellae. Cytology and cytochemistry Gill filaments contain a wide, centrally-located gill ray (Fig. 1) which stains intensely in PAS, Alcian bine pH , and Alcian blue pH with high concentra- tions of MgClo (Table I). Large mucus-secreting cells are found at both base and tip of filaments; cell secretions stain prominently with PAS reactions as well as with Alcian blue pH They appear unstained in Alcian blue pH A well-defined basement membrane supports the filament epithelium (Fig. 2) ; this connective tissue encircles afferent lamellar arteries and extends into secondary lamellae as the basement membrane for lamellar epithelia. It is stained intensely by PAS, Alcian blue pH , and Alcian blue pH with concentrations of MgClo up to M (Table I).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield,
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
