@article {4958,
	title = {Incredible journey: How do developmental signals travel through tissue?},
	year = {2004},
	pages = {2985-2997},
	doi = {10.1101/gad.1233104},
	url = {http://www.ncbi.nlm.nih.gov/pubmed/15601817},
	author = {Alan Jian Zhu and Matthew P. Scott}
}
