KATERYNA KON / SCIENCE PHOTO LIBRARY KATERYNA KON / SCIENCE PHOTO LIBRARY
Gram-positive bacterial cell wall, illustration. The horizontal layers include a plasma membrane (blue) containing transmembrane proteins (green, yellow and purple). Above this is a thick peptidoglycan layer (purple rods) that is held together by teichoic acids (red rods) and lipoteichoic acids (green rods).
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