CapsidThe protein shell surrounding the virus's genes; this shell is made from many smaller proteins which are identical and are called capsomers.EnvelopeSome viruses have a bubble of fat that surrounds the virion.GeneA segment of DNA or RNA; genes are like sentences made of the "letters" of the nucleotide alphabet. Genes direct the reproduction of  viruses. Different types of viruses have genes made from DNA or RNA but not both.Host rangeThe animals, plants or bacteria that any one type of virus can infect.BacteriophagesThe viruses that reproduce in bacteria.Cell tropismThe type of cell in which a virus can reproduce.SerotypeA grouping of viruses based on the antigens on the surface of virus.SymmetryAll viruses of a type are identical and their particles have a cubical, helical or complex structure.vteවෛරස් යනු ස්ජීවි ධාරක් සෛල තුළ පමණක් ප්‍රජනනය සිදු කළ හැකි ජෛව කාරකයකි. වෛරසයකින් ආසාදනය වූ විට ධාරක සෛල තුළදී, එහි අනන්‍ය හා සර්වසම පිටපත් දහස් ගණනක්, අසාමාන්‍ය වූ වේග