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Frontiers of Materials Science

ISSN 2095-025X

ISSN 2095-0268(Online)

CN 11-5985/TB

Postal Subscription Code 80-974

2018 Impact Factor: 1.701

Front. Mater. Sci.    2008, Vol. 2 Issue (2) : 134-142    https://doi.org/10.1007/s11706-008-0023-7
Fine structure and development of the collar enamel in gars, , Actinopterygii
SASAGAWA Ichiro1, ISHIYAMA Mikio2, YOKOSUKA Hiroyuki2, MIKAMI Masato3
1.Advanced Research Centre, School of Life Dentistry at Niigata, Nippon Dental University; 2.Department of Histology, School of Life Dentistry at Niigata, Nippon Dental University; 3.Department of Microbiology, School of Life Dentistry at Niigata, Nippon Dental University;
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Abstract The fine structure of collar enamel and the cells constituting the enamel organ during amelogenesis in Lepisosteus oculatus was observed by light, scanning electron and transmission electron microscopy. In the enamel, slender crystals were arranged perpendicular to the surface and the stripes that were parallel to the surface were observed, suggesting that the enamel in Lepisosteus shares common morphological features with that in sarcopterygian fish and amphibians. Ameloblasts containing developed Golgi apparatus, rough endoplasmic reticulum (rER) and secretory granules were found in the secretory stage. In the maturation stage, a ruffled border was not seen at the distal end of the ameloblasts, while many mitochondria and lysosome-like granules were obvious in the distal cytoplasm. The enamel organ consisted of the outer dental epithelial cells, stratum reticulum cells and ameloblasts, but there was no stratum intermedium. It is likely that the ameloblasts have less absorptive function in comparison with the inner dental epithelial cells facing cap enameloid.
Issue Date: 05 June 2008
 Cite this article:   
ISHIYAMA Mikio,SASAGAWA Ichiro,YOKOSUKA Hiroyuki, et al. Fine structure and development of the collar enamel in gars, , Actinopterygii[J]. Front. Mater. Sci., 2008, 2(2): 134-142.
 URL:  
https://academic.hep.com.cn/foms/EN/10.1007/s11706-008-0023-7
https://academic.hep.com.cn/foms/EN/Y2008/V2/I2/134
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