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

Lei. Wang, et.al., A novel aminophospholipid transporter exclusively expressed in spermatozoa is required for membrane lipid asymmetry and normal fertilization., Developmental biology, 2004, 267
http://rdf.ncbi.nlm.nih.gov/pubmed/14975727