Some polypide surface membrane and food vacuole membrane showed multilayer thread-like change.

有些虫体表膜、食物泡膜呈现多层螺纹膜样改变。

The process involves extension and invagination of the plasma membrane to form small vesicles in pinocytosis (pinocytotic vesicles) or vacuoles in phagocytosis (food vacuoles).

内吞过程涉及到细胞膜的延伸和内陷。