Hello

For staining you can use Immunofluorescence or Immunohistochemistry 

For  specific antigens , Try with Anti-Neutrophil Elastase antibody (ab21595)

and look at links for protocols and more information .

Good Luck 

http://www.abcam.com/index.html?pageconfig=popular_protocols

http://www.abcam.com/neutrophil-elastase-antibody-ab21595.html

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4400491/

https://www.jci.org/articles/view/61303

http://www.bloodjournal.org/content/123/24/3818?sso-checked=true