In this article we will discuss about viroids which are smallest known agents of infectious diseases and are not related to viruses. Subject-Matter of Viroids: Diener (1971), during his studies on Potato spindle Tuber disease assumed to be caused by a virus, discovered that the causal organism was made up of naked free RNA devoid of protein coat. Except for [...]
In this article we will discuss about the nomenclature of viruses. It was realised by the virologists that binomial system of nomenclature proposed by Carolus Linnaeus and successfully used for both animals and plants cannot be used for viruses. Johnson (1927) was the first to attempt to naming the viruses. According to him, the name of a virus consists of [...]
In this article we will discuss about:- 1. Introduction to Mycoplasma 2. Morphology of Mycoplasma 3. Cell-Shape 4. Cell Structure 5. Reproduction 6. Transmission. Introduction to Mycoplasma: Mycloplasmas are the smallest, wall-less free living prokayotes belonging to class-Mollicutes. There were first discovered by Pasteur in 1843 when he was studying the causal organisms of pleuropneumonia in catties. He named it [...]