English: A. Molecular graphics illustration of an IKVAV-containing peptide amphiphile molecule and its self-assembly into nanofibers. B. Scanning electron micrograph of an IKVAV nanofiber network formed by adding cell media (DMEM) to a peptide amphiphile aqueous solution. The sample in the image was obtained by network dehydration and critical-point drying of samples caged in a metal grid to prevent network collapse (samples were sputtered with gold-palladium films and imaged at 10 kV). C. and D. Micrographs of the gel formed by adding to IKVAV peptide amphiphile solutions C cell culture media and D cerebral spinal fluid. E. Micrograph of an IKVAV nanofiber gel surgically extracted from an enucleated rat eye after intraocular injection of the peptide amphiphile solution. Reproduced from (Silva et al. (2004)) Reprinted with permission from AAAS. Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modified, adapted, performed, displayed, published, or sold in whole or in part, without prior written permission from the publisher.