LGMN and periodontal disorder: The proteins may be present as intactproteins or modified/cleaved forms.1 Many techniques have been employed to identify and explore the proteincomposition of human AEP, which range from amino acid profiling invitro2 and in vivo,3 to structural studies by electron microscopy4 and atomic force microscopy.1 It is important to understand the acquisition of the canine AEP because ofits role in plaque accumulation and associated conditions of the oral cavity, suchas periodontal disease.