Eulderink, F.

spleen peptidoglycan preparation method muramic acid fraction sample protein muramic preparation b muramyl peptides arthritis peptide antibody muramyl macrophage cell wall fragments presence retention time determination hadzija detection tissue d-lactic acid tipper concentration d-lactic 0.5 m nacl hazenberg study carbohydrate immun fragment sugar group lactyl group 11.3 min column peptidoglycan polysaccharides patient colorimetric result flora staining analysis aerofacien volume extraction table dansylated retention 100 l muramyl dipeptide 30 min immunohistologic staining polymer polysaccharide 2 e 9 hplc analysis tumor necrosis factor carbohydrate fraction spleen samples 12 m hcl bacteria assay colorimetric method serum lactyl biochem sephadex induction -25 antigen activity krueger johannsen severijnen 11.3 mur-containing fraction monocyte