Tungsten trioxide can form intercalation compounds with alkali metals. Molybdenum disulfide is a host for formation of intercalation compounds. Doxorubicin interacts with DNA by intercalation and inhibition of macromolecular biosynthesis. Similar to doxorubicin, daunorubicin interacts with DNA by intercalation and inhibition of macromolecular biosynthesis. The working mechanisms of pseudocapacitors are redox reactions, intercalation and electrosorption (adsorption onto a surface). The working mechanisms of pseudocapacitors are redox reactions, intercalation and electrosorption. Yazami's research project included a study of graphite intercalation compounds for lithium battery applications. This means that insertion of one is equivalent to three ions in conventional intercalation cathodes. Graphite forms intercalation compounds with some metals and small molecules. Another well-known family of intercalation hosts are the layered metal dichalcogenides such as titanium disulfide. Its stable structure guarantees a reversible intercalation/de-intercalation of potassium ions under charge/discharge. A prominent example of an intercalation compound is potassium graphite, denoted by the formula KC. In a graphite intercalation compound not every layer is necessarily occupied by guests. The process begins by bathing the graphite in a solvent for intercalation. It is cell-permeable, and interacts with DNA and RNA by intercalation or electrostatic attractions.