1592953409000 1312632483000 term-49526 1616541150851 1312632543000 1616289895789 adlib fitz-online adlib-term-49526 47fa910c-9ef4-3fca-bb3c-9dbf756fa618 2 reference term-50721 adlib-term-50721 19f8d4c6-8d3e-3d35-8c61-900ea4719516 membrane structures 1 membrane structure membrane structure term