This video lecture from Variety of Life (F.Sc. first year Biology) covers the Classification of Viiruses, Baltimore Classification System, general structure of Viruses and detailed structures of Bacteriophage, Influenza Virus, and HIV Virus. Find more e-learning material and educational video lectures in Urdu at maktab.pk. These videos are free to use for promotional and commercial purpose by keeping the credits to Maktab.