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These cells were " seeded " into tiny , flexible scaffolds of collagen , a tough , fibrous protein that holds together various cells and tissues in the body . Thus in 1996 a prominent Canadian press published a book that holds all evangelicaldom in the American South in outright contempt . It was a short book that holds much information . Gauvry 's solution : With the help of fishermen , he designed and constructed a simple mesh bag that holds the bait in the conchers ' traps and prevents other species from running off with it . Membranes exist throughout the cell and are far more than an outer shell that holds things in , he said . This is the engine that holds , manages , and delivers the content-an electronic library , which can produce anything needed upon demand .