Primary bone is a temporary tissue and is soon replaced by the definitive, lamellar variety of bone.
初级骨是暂时性的组织，不久就为永久性的板层骨所代替。
2
If a definitive diagnosis is desired, then a biopsy (obtaining tissue samples) of the intestinal lining is required.
如果需要一个明确的诊断，活检获得组织样本的肠壁是必需的。
3
All patients received at least 30 days of follow-up until definitive diagnosis of malignancy was established or 1-year follow-up if index tissue sampling was benign.