Does anyone out there have experience with BMP2-9?  Are they supposed to stain muscle or cartilage?  Or is this non-specific staining?

I'm using them on paraformaldehyde fixed & decaled paraffin samples of rabbit bone. The antibodies are from Santa Cruz.

Thank You,
Julie Collins
Dir, Immunohistochemistry
Univ. of Kansas Med. Center
Kansas City, KS