Envoyer par SMS: Studies on the Interactions of 3,11-Difluoro-6,8,13-trimethyl-8<i>H</i>-quino[4,3,2-<i>kl</i>]acridinium and Insulin with the Quadruplex-Forming Oligonucleotide Sequence a2 from the Insulin-Linked Polymorphic Region