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

Jung Hoon. Yang, et.al., Brain-specific Phgdh deletion reveals a pivotal role for L-serine biosynthesis in controlling the level of D-serine, an N-methyl-D-aspartate receptor co-agonist, in adult brain., The Journal of biological chemistry, 2010, 285
http://rdf.ncbi.nlm.nih.gov/pubmed/20966073