Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Ultrastructure of Ocellar Never System in Drosophila melanogaster

초파리 단안 신경계의 미세형태학적연구

  • 윤춘식 (생명공학연구소 유전체연구단)
  • Published : 1999.12.01
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Abstract

Ultrastructure of ocellar system was studied in adult Drosophila melanogaster. Ocellus was composed of terminal receptors, interneuron and glia. These three part showed different brightness each other and each component was distinct. In the glial cell, rER was abundant, and terminal receptors and interneuron showed numerous microtubules, special transporting system. The terminal receptors have particular structure referred as capital projection connecting the terminal receptor to glia. In synaptic active zone between terminal receptor and interneuron, ribbon-like structures and synaptic vesicles around the structures were frequently observed. In addition, the cross section of giant interneuron was also observed.

성층 초파리의 단안 신경계를 미세형태학적으로 연구 하였다. 단안은 수용기말단, 개재신경 그리고 신경교세포의 3종류로 구성되어 있다. 이들은 전자현미경 사진상에서 각기 다른 밝기를 보여주고 있으므로 쉽게 구분이 가능했다. 신경교세포 내에는 조면소포체가 풍부하게 존재하고, 수용기 말단과 개재신경내에는 신경세포에서 물질의 이동 통로인 미소관이 다수 관찰되었다, 수용기말단과 신경교세포를 연결해주는 capital projection이라는 인상적인 구조물이 관찰된다. 수용기 말단과 개재신경의 시냅스 활성부에 존재하는 리본모양의 구조물과 이들 주위에 모여있는 시냅스 소포들이 자주 관찰되었다. 그리고 단안 시신경이 최종적으로 집중되어 뇌로 신호를 전달해 주는 거대개재신경(giant interneuron)의 횡단 구조를 관찰 할 수 있었다.

Keywords

References

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