Several animal viruses namely the Human immunodeficiency virus (HIV) exits from the infected cells of the immune system through a process... View Article
Viruses can enter into the cell of the host either without or with the viral capsid. The nucleic acid of the bacteriophages enter the host cell... View Article
Viruses should make use of their host-cell processes in order to replicate. The viral replication cycle can generate striking structural and... View Article
Viruses are intracellular parasites; they should identify and attach to a particular living cell first before entering it. Once penetration... View Article
RNA viruses comprise RNA only as their genetic matter. In order to replicate their genomes in the host cell, the RNA viruses should encode their... View Article
As seen in almost all the living entities using DNA as their genetic material, viruses can either use RNA or DNA. The core of the virus comprises... View Article
Insertion or integration is possible as the cII protein triggers the transcription of the 'int' gene simultaneously with the c1 gene. The int... View Article
T4 DNA exhibits terminal redundancy wherein the base sequences are repeated at both ends of the molecule. When several copies of DNA are... View Article
Randomly, bacteriophages do not attach to the host cell's surface, instead, it fastens to the particular surface structures referred to as... View Article
Viruses are grouped into various taxonomic groups on the basis of traits related to structure and composition of virion, type of the host used,... View Article
Most of the RNA genomes are segmented. That is to say that it is divided into distinct parts where each segment is believed to code for one... View Article
Most of the RNA viruses utilize a single-stranded RNA or ssRNA as its genetic material. The base sequence of RNA could be identical with that of... View Article
The range of the size of virions' diameter is about 10 - 300 or 400 nm. The smallest of viruses are somewhat larger compared to ribosomes... View Article
It is the most popular indirect method of counting virus particles. Several viruses bind to the surface of RBCs (red blood cells). In case the... View Article
Nucleic acids and cellular proteins can be eliminated from several virus preparations via enzymatic degradation. This is because viruses... View Article
Like several proteins, viruses could be purified through the process of precipitation with concentrated ammonium sulfate. To begin with, adequate... View Article
Viruses could be purified on the basis of their density and size with the usage of gradient centrifugation. A sucrose solution is let into a... View Article
The process of virus purification utilizes many properties of viruses. Virions are larger compared to proteins and usually are stable compared to... View Article
Bacteriophages or bacterial viruses are cultivated either in agar or broth in actively growing and young bacterial cells. Hence, several host... View Article
