TY - RPRT TI - Preparation, characterization, and biological activity of stability-enhanced polyethyleneimine-conjugated gold nanoparticles (Au-PEI@NIST) for biological application AU - Cho, Tae Joon AU - Hackley, Vincent A AU - Yi, Feng AU - LaVan, David A AU - Reipa, Vytas AU - Tona, Alessandro AU - Nelson, Bryant C AU - Sims, Christopher M AU - Farkas, Natalia PY - 2021 PB - National Institute of Standards and Technology (U.S.) CY - Gaithersburg, MD SN - NIST SP 1200-29 DO - 10.6028/NIST.SP.1200-29 ER -