The stele includes all primary tissues derived from the procambium consists of pericycle, phloem and xylem.
中柱包括从原形成层衍生而来的全部初生组织，由中柱鞘、韧质部和木质部组成。
The stele includes all primary tissues derived from the procambium consists of pericycle, phloem and xylem .
中柱包括从原形成层衍生而来的全部初生组织，由中柱鞘、韧质部和木质部组成。
Rheumatoid arthritis (RA) is a chronic systemic autoimmune disease, which has as its primary target, the synovial tissues and articular cartilage.
类风湿关节炎是一种慢性全身性自身免疫病，其主要受累部位是滑膜组织和关节软骨。
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