The inner tangental wall and radial wall are thickened, while outer tangental wall remain in thin wall state.

细胞的内切向壁及径向壁均加厚，而外切向壁保持薄壁状态。

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The inner tangental wall and radial wall are thickened, while outer tangental wall remain in thin wall state.

细胞的内切向壁及径向壁均加厚，而外切向壁保持薄壁状态。

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