Question about GFAP

This is the antibody I am using - https://neuromab.ucdavis.edu/datasheet/N206A_8.pdf
I worked with this ab a lot when I worked for this company. Its KO validated via western and IHC, its very sensitive, works super great.

I am just wondering if this is an epitope difference? Or why does this staining look so robust in DRG in naive animals? I will order your recommended ab and compare. This is in mouse spinal cord: