目的通过检测特发性身材矮小(ISS)儿童血清骨碱性磷酸酶(BAP)及骨钙蛋白(OC)水平，探讨其成骨细胞的功能状况。

Objective To detect serum bone specific alkaline phosphatase (BAP) and osteocalcin (oc) in children with idiopathic short stature (ISS), and explore the status of osteoblast.

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这种植物矮小，主干别处存在厚壁细胞，说明这种木材在生长过程中可以高效地把水从土壤中传输到植物上。

The plants' small size, as well as the presence of thick-walled cells elsewhere in the stems, suggests that wood evolved to efficiently transport water from the soil into the plant.

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