we have tested the incorporation of water soluble phospholipid precursors into the corresponding phospholipid from different brain areas , by injecting either a mixture of labeled glycerol and choline or glycerol and ethanolamine into the lateral ventricle of the brain of adult ( 4 months old ) and senescent ( 12 months old ) shr-nacl .
C0006104
brain
C0152279
the lateral ventricle of