Bromelain-loaded silver nanoparticles: Formulation, characterization and biological activity by Gheisari, Farshid, Kasaee, Seyed Reza, Mohamadian, Pardis, Chelliapan, Shreeshivadasan, Gholizadeh, Razieh, Zareshahrabadi, Zahra, Solhjoo, Seyyed Pooria, Vafa, Ehsan, Mosleh-Shirazi, Sareh, Amani, Ali Mohammad, Kamyab, Hesam