Formally, a hypergraph formula_1 is a pair formula_2 where formula_3 is a set of elements called "nodes" or "vertices", and formula_4 is a set of non-empty subsets of formula_3 called hyperedges or edges.
Virus hepatitisa B prenese v gostiteljevo celico svoj genetski material v obliki DNK, ki se nato podvojuje s pomočjo DNK-polimeraze, odvisne od RNK.