পৰিপ্ৰেক্ষিতপৰিবহণ
পৰিফিন (Assamese)
পৰিফিন (Assamese)
1. Porphyrins ( POR-fər-ins) are a group of heterocyclic, macrocyclic, organic compounds, composed of four modified pyrrole subunits interconnected at their α carbon atoms via methine bridges (=CH−). In vertebrates... from wikipedia.org