Bacteriophage, Tail fibers affix to cell wall proteins. Viral DNA is infuse into host cell. No coating required. Biosynthesis in cytoplasm, Lysogeny. Host cell is lysed. 2) Animal: Attachment sites are plasma membrane proteins and glycoproteins. Capsid goes in by receptor-mediated endocytosis or fusion. Uncoating by enzymatic removal of capsid proteins. Biosynthesis in nucleus (DNA viruses) or cytoplasm (RNA viruses). Latency; slow viral infections; cancer. Released thru enveloped virus bud out; nonenveloped viruses rupture plasma membrane.