Cytosine
or ...
See perhaps also ...
Base pair (Nukleotid basepar)
Nucleoside (nekleotider)
http://en.wikipedia.org/wiki/Cytosine
http://da.wikipedia.org/wiki/Cytosin
or ...
See perhaps also ...
Base pair (Nukleotid basepar)
Nucleoside (nekleotider)
http://en.wikipedia.org/wiki/Cytosine
http://da.wikipedia.org/wiki/Cytosin