3049422 MPER membrane-proximal external region 340 3049419 MPER membrane proximal region 3 3049423 MPER membrane external proximal region 2 3049421 MPER membrane proximal external region from HIV-1 2 3049429 MPER Malignant Pleural Effusion Risk 1 3049425 MPER mammalian protein extraction reagent 1 3049424 MPER mean pairwise effective resistance 1 3049420 MPER membrane proximal extracellular region 1 3049418 MPER membrane-proximal 1 3049417 MPER membrane-proximal 7-residue external region 1 3049416 MPER membrane-proximal epitopes 1 3049428 MPER metal-proton exchange reaction 1 3049427 MPER milk production energy requirements 1 3049426 MPER multiplex primer extension reaction 1