Delivery of mRNA Vaccine against SARS-CoV-2 Using a Polyglucin:Spermidine Conjugate oleh Larisa I. Karpenko, Andrey P. Rudometov, Sergei V. Sharabrin, Dmitry N. Shcherbakov, Mariya B. Borgoyakova, Sergei I. Bazhan, Ekaterina A. Volosnikova, Nadezhda B. Rudometova, Lyubov A. Orlova, Inna A. Pyshnaya, Boris N. Zaitsev, Natalya V. Volkova, Mamedyar Sh. Azaev, Anna V. Zaykovskaya, Oleg V. Pyankov, Alexander A. Ilyichev