1. Bergmeyer H (1974) Methoden der enzymatischen Analyse. Verlag Chemie, Weinheim, pp 1727?1734
2. Franken N, Seidl PH, Zauner E, Kolb HJ, Schleifer KH, Weiss L (1985) Quantitative determination of human IgG antibodies to the peptide subunit determinant of peptidoglycan by an enzymelinked immunosorbent assay. Mol Immunol 22:573?579
3. Ghuysen JM, Tipper DJ, Strominger JL (1966) Enzymes that degrade bacterial cell walls. In: Colowick SP, Kaplan NO (eds) Methods in enzymology, vol 8. Academic Press, New York, pp 685?699
4. Heymer B, Bernstein D, Schleifer KH, Krause RM (1975) Measurement of peptidoglycan antibodies by a radioimmunoassay. Z Immun Forsch 149:168?178
5. Heymer B, Seidl PH, Schleifer KH (1985) Immunochemistry and biological activity of peptidoglycan. In: Stewart-Tull DES (ed) Immunology of the bacterial cell envelope. John Wiley, Chichester (in press)