describes a phospholipid bilayer in which embedded proteins can move laterally within the membrane. : a technique for rapid amplification of a specific DNA sequence : organ in which T cell development occurs. : cell type of innate immunity that can break down and present antigens to T cells : a receptor of innate immunity that detects general structures displayed by microorganisms. : lymphyocyte of adaptive immunity that produces antibodies. : organelle that is studded with ribosomes and serves as site of protein synthesis. : a commonly used technique of recombinant DNA technology in which mixtures of DNA fragments of different sizes can be separated from each other : part of the innate immunity, a system of circulating proteins that can mark pathogens for destruction. : a series of increasingly electronegative components embedded in the inner mitochondrial membrane; receive electrons donated by NADH and FADH 2 . .