胚珠是半球形的，有2个被膜，腱鞘状，而原孢子细胞直接作为大孢子母细胞起作用。
The ovules are hemitropous, with 2 integuments, tenuinucellate and the archesporial cell functions directly as the mega-spore mother cell.
他们从人造“原细胞”着手，这些像真细胞的“人造细胞”外部被一层脂肪膜所包围。
They began by experimenting on artificial "protocells". These, like real cells, were surrounded by membranes made of fatty molecules.
这些类似真细胞的“原细胞”被油脂分子包围。膜上浮动的的蛋白只会让某些离子通过。利用这个系统，研究人员发现他们可以将电鳗的发电机能复制出来。
These, like real cells, were surrounded by membranes made of fatty molecules. Proteins "floating" in the membranes would let only certain ions pass.
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