serial 1 micron frozen sections were stained by avidin-biotin-peroxidase complex immunocytochemistry by using a specific antiserum to apoe and by antibodies that identify different cell types : glial fibrillary acidic protein ( gfap ) for astrocytes , 2',3'-cyclic nucleotide-3 ' phosphodiesterase ( cnp ) for oligodendrocytes , and ed1 for macrophages .
C0020960
antiserum
C0003241
antibodies