@article {cite-key,
	title = {An ancient cluster of Wnt paralogues.},
	journal = {Trends Genet},
	volume = {17},
	number = {8},
	year = {2001},
	month = {Aug},
	pages = {443},
	issn = {0168-9525 (Print); 0168-9525 (Linking)},
	author = {Nusse, R}
}
