Electroformation is used to generate the “giant unilamellar” type of these structures. These structures can be assembled using a protein that has “helix-break-helix” motifs and is called caveolin-1. A protein involved in assembling another type of (10[1])these structures contains PIP2 (“pip-two”)-binding ANTH domains and links AP2 adaptor complexes with a triskelion-shaped protein that coats these structures. Rab GTPases (“G-T-P-aces”) help tether these structures prior to SNARE (“snair”)-mediated fusion. Sec13/31 (“seck-13-31”) is recruited to assemble COPII (“cop-two”) complexes around these structures, which are analogous to their clathrin-coated types. Receptor-mediated endocytosis forms these structures, which also compartmentalize cargo by the trans-Golgi network. For 10 points, name these membrane-bound structures used for trafficking. ■END■ (10[2])