Table 1.

Antigenic characteristics of neonatal rat cells immunopanned for PSA-NCAM antibody

% of total cells (mean ± SEM)% of PSA-NCAM+ cells1-a (mean ± SEM)
PSA-NCAM (n = 14 experiments)87.0  ± 4
GD3 (n = 8)15.0  ± 814.2  ± 8.4
A2B5 (n = 3)11.7  ± 21-b
O4 (n = 10)7.9  ± 5.41-b
GFAP (n = 10)2.9  ± 1.41.9  ± 1.2
Nestin (n = 7)80.6  ± 685.4  ± 6.7
PDGFRα (n = 4)93.2  ± 4.696.2  ± 3.7
MAP2b (clone AP20) (n = 5)2.6  ± 1.73.5  ± 1.9
MAP2abc (clone HM-2) (n = 3)80.3  ± 12.9ND
  • ND, not determined.

  • F1-a  By double or triple labeling of panned cells with anti PSA-NCAM antibody and antibodies to the other antigens listed.

  • F1-b  The percentage of O4+ or A2B5+ cells from PSA-NCAM+ cells could not be determined because all three antibodies are of mouse IgM class. However, most O4+ cells did not express nestin and therefore probably do not bear PSA-NCAM on their surface.