Paper Title
Distribution of Intracellular Calcium During Ovarian Development of Zebrafish, Danio Rerio

Abstract
The aim of this study was to assess distribution of intracellular calcium during stages of oogenesis in zebrafish using a combined oxalate-pyroantimonate technique. The oocyte development of zebrafish was categorized into four stages: primary growth, cortical-alveolus, vitellogenic, and maturation, based on morphological criteria. Calcium in the primary growth stage were detected in the cytoplasm, mitochondria, nucleus, and follicular cells. At the cortical-alveolus stage, calcium particles were found in the cortical alveoli. Large amounts of intracellular calcium was accumulated in follicular cells, zona radiata and inside the cortical alveoli. In the maturation stage, calcium wan only visible in mitochondria. Basic information about calcium distribution during zebrafish oogenesis may contribute to better understanding of its role in oogenesis. Keywords: Follicular cell, Oocyte, Ovary,Oxalate�pyroantimonate, Zebrafish.