confirmation of the pineal parenchymal nature of these neoplasms and of their differentiating potential was provided by a modification of the achucarro-hortega 's silver carbonate impregnation technique for pineal parenchymal cells , by specific silver impregnations for axonal processes , and by an immunoperoxidase stain for glial fibrillary acidic ( gfa ) protein .
C0031941
of
C0031939
pineal