骨是一种复杂的天然复合材料.我们在斑马鱼的脊椎骨中发现了2种与矿化有关的基质囊泡:单囊泡和多囊泡.对这2种基质囊泡进行了TEM和SED分析,发现都含有钙、磷离子,说明它们可能与斑马鱼骨矿化中的离子输送有关.单囊泡与已有研究中发现的基质囊泡一样,直径为100～500nm;但多囊泡直径为700～1000nm,并由直径平均100nm的小囊泡构成.
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