英语语法分析

The para-nodule was composed of epidermis cells, cortex cells and meristematic cells.

类根瘤由表皮细胞、皮层细胞和分生细胞组成。

The middle region was composed of meristematic tissue whose cells had high proliferative activity (Plate Ib).

中层区是由增殖能力旺盛的分生组织细胞所构成；

The undulate plasmalemma or some invaginations of plasmalemma varied in size was observed in the meristematic cells.

在分化细胞中，质膜呈波状起伏或形成某些大小不等的质膜内陷。