Brain Transcriptome Database (BrainTx)http://rdf.ncbi.nlm.nih.gov/pubmed/

Jeong-Hoon. Joo, et.al., Disruption of mouse corneal epithelial differentiation by conditional inactivation of pnn., Investigative ophthalmology & visual science, 2010, 51
http://rdf.ncbi.nlm.nih.gov/pubmed/19892877