Centriole A cell organelle consisting of two short tubular structures orientated at right angles to each other.中心粒：由两个互成直角的圆筒状小体构成的细胞器。
Spherosome A small spherical organelle of plant cells, about 0.5-1.0um in diameter, bounded by a single membrane and sto圆球体：植物细胞内的小型圆球样细胞器，直径在0.5~1.0微米之间。由单层质膜结构和结构包被，还含有一些贮藏脂类物质。