Table 3.

Brain data: Biological relevance of some of the selected genes

Bard1	Plays a central role in the control of the cell cycle in response to DNA damage
PGDH	Possibly involved in development and maintenance of the blood-brain, blood-retina, blood-aqueous humor and blood-testis barrier. It is likely to play important roles in both maturation and maintenance of the central nervous system and male reproductive system
Na(v) Beta1	Involved in the generation and propagation of action potentials in muscle and neuronal cells
NDF1	Differentiation factor required for dendrite morphogenesis and maintenance in the cere bellar cortex
Neuronatin	May participate in the maintenance of segment identity in the hindbrain and pituitary development, and maturation or maintenance of the overall structure of the nervous system
PEA15	death effector domain (DED)-containing protein predominantly expressed in the central nervous system, particularly in astrocytes
CD97	Receptor potentially involved in both adhesion and signalling processes early after leukocyte activation. Plays an essential role in leukocyte migration
ALDOC	is expressed specifically in the hippocampus and Purkinje cells of the brain
Cyclin D1	The protein encoded by this gene has been shown to interact with tumor suppressor protein Rb Mutations, amplification and overexpression of this gene, which alters cell cycle progression, are observed frequently in a variety of tumors and may contribute to tumour genesis

Description of the genes or proteins encoded by the genes selected by sPLS-DA and present in the known GeneGO biological network.