Effect of structure levels on surface-enhanced Raman scattering of human telomeric G-quadruplexes in diluted and crowded media. - Papi, Francesco; Kenđel, Adriana; Ratkaj, Marina; Piantanida, Ivo; Gratteri, Paola; Bazzicalupi, Carla; Miljanić, Snežana (Analytical & Bioanalytical Chemistry, 2019)