Physicochemical characterization of nanoparticles formed between DNA and phosphorylcholine substituted chitosans - Casé, Ana Helena; Dalla Picola, Isadora Pfeifer; Zaniquelli, Maria Elisabete Darbello; Fernandes, Júlio César; Taboga, Sebastião Roberto; Winnik, Françoise M.; Tiera, Márcio José (Journal of Colloid and Interface Science, 2009)