The vascular cambium extends to form a complete ring of meristematic tissue around the stem , the separate vascular bundles being linked by interfascicular cambium 维管形成层向两侧延伸直至形成一个茎内的分生组织环，各个维管束被束间形成层联系在一起。
Competence a characteristic of embryonic cells and meristematic cells whereby they have the potential to differentiate into any of several different types of cell 感受态：胚胎细胞和分生组织细胞具有的一种生理状态，它们可以具有分化为各种类型细胞的能力。
But they are also quite literally believed to have once been normal stem cells or their immature offspring that have undergone a malignant transformation 一般相信，癌症干细胞原本是正常的干细胞，或者是由干细胞分生出来、尚不成熟的前驱细胞，之后才转形成癌细胞。
The results showed that the prime symptoms of the tpd include laticifer necrosis and cambium - like meristem formation that occurs around the necrotic laticifer in the inner bark 结果表明该病的基本症状是在树皮内层发生乳管坏死和在坏死的乳管周围产生形成层状分生组织。
Initiation of somatic cells stimulated by cytokinin , division of the initiated somatic cells and succeeding shoot meristem development are three key steps in the process 细胞分裂素诱导体细胞启动、启动的体细胞进行分裂和由此引发的茎分生组织发育是这一过程中的3个重要步骤。
In the chinese opera , there are generally four main categories of roles : sheng the male roles , dan the female roles , jing the painted face roles , and chou clowns 剧化妆基本分生、旦、净、丑四种。特色在以非现实的色彩、线条和图案改变演员的本来面目，达到夸张和象徵的目的。
Taken together , map2 and sap2 belong to an enlarging family : ap2 transcription factor . they may have some functions in the development of flower and seed 这些特征说明它们同属于ap2亚族转录因子，在细胞核内表达，可能参与调控花器官、花分生组织发育以及种子和胚乳的形成过程。
Proplastid a self - duplicating undifferentiated plastid , about 0 . 5 - 1 m in diameter and found in the meristematic regions of plants . they grow and develop into plastids of different types 前质体：能够自我复制的没有分化的质体，直径约0 . 5 - 1微米，发现于植物分生组织区域。它们生长发育为不同类型的质体。
The root point thereforecan grow , is by the root point growing point ( meristematic tissue ) thecell can unceasingly split produces the new cell , as well as the newcell unceasingly elongates result 根尖之所以能够生长，是由根尖生长点（分生组织）的细胞能够不断地分裂产生新细胞，以及新细胞不断伸长的结果。
Callus 1 . a mass of undifferentiated parenchyma . if a plant is injured , the surrounding uninjured parenchyma cells form a suberin - impregnated callus , sometimes , sealing off the wound 愈伤组织： 1 .一团未分化的薄壁组织。如果植物受到损伤，那么周围未受伤的薄壁组织就会在伤口处形成具有分生能力的组织，有时可以封闭伤口。
