by Johns Hopkins University School of Medicine The same glycoform of RPTPζ carries CD33 and Siglec-8 ligands. A, equal aliquots of human cerebral cortex total protein extract from four donors (numbered) were resolved on replicate composite agarose–acrylamide gels and blotted to PVDF. One blot (upper panels) was double-label probed with CD33-Fc (red) and anti-RPTPζ (green)...
