Ekspresi protein rekombinan pre-membran, envelope dan non struktural 1 (NS1del) virus dengue serotipe 2 strain Indonesia secara in vitro sebagai kandidat vaksin DNA = Expression of pre membrane envelope and non structural 1 (NS1del) recombinant proteins from dengue virus serotype 2 Indonesian strain in vitro as DNA vaccine candidates / Lola Febriana Dewi