has subject area Antigens, Bacterial Biological Science Disciplines - Immunohistochemistry Biological Science Disciplines - Immunohistochemistry Carrier Proteins - Porins Cell Membrane Chemistry - Immunohistochemistry Chemistry - Immunohistochemistry Colicins Diagnostic Techniques and Procedures - Immunohistochemistry Diagnostic Techniques and Procedures - Immunohistochemistry Endopeptidases - Endopeptidase K Endopeptidases - Serine Endopeptidases Epitopes Gammaproteobacteria - Escherichia coli Gram-Negative Facultatively Anaerobic Rods - Escherichia coli Histology - Immunohistochemistry Image Processing, Computer-Assisted Immunologic Techniques - Immunohistochemistry Investigative Techniques - Immunohistochemistry Investigative Techniques - Immunohistochemistry Membrane Proteins - Porins Membrane Proteins - Porins Models, Molecular Protein Conformation Sequence Analysis Serine Proteases - Endopeptidase K Serine Proteases - Serine Endopeptidases