overall , the changes in free amino acid concentration induced by x-irradiation in the cytoplasmic fraction in both brain regions studied are opposite to those found in the synaptic vesicle fraction and although they may indicate changes in specific cell populations , as proposed above , they could also reflect changes in cellular compartmentalization and metabolism or changes in the relative axonal arborization of the affected regions .
C0010834
cytoplasmic
C0007634
cellular