Effect of Gynura procumbens leaf extract with biological nanoparticles on streptozotocin-induced hyperglycemia in a rat model oleh Shahadat Alam Badsha, Rakibul Islam, Mst. Misrat Masuma Parvez, Md. Bazlar Rashid, Md. Mahmudul Hasan, Vishakha Kulkarni, Sumon Sarkar