title: Storage of Escherichia coli thermolabile enterotoxin on filter papers for assay by immune haemolysis reactions.
abstract: Thermolabile (LT) enterotoxin was prepared from stationary and shaken cultures of enterotoxigenic Escherichia coli (ETEC) grown in casamino acids-yeast extract medium and dried onto filter discs. These were then examined by a modification of the single radial immune haemolysis (SRIH) test. It was observed that LT antigenicity, as detected by this test, remained unaltered for as long as 30 days at room temperature.
mesh_terms: D001427:Bacterial Toxins / Q000032:analysis* / Q000276:immunology; D004768:Enterotoxins / Q000032:analysis* / Q000276:immunology; D004926:Escherichia coli / Q000276:immunology*; D029968:Escherichia coli Proteins; D005374:Filtration / Q000295:instrumentation; D006462:Hemolytic Plaque Technique; D013997:Time Factors
chemical_list: D001427:Bacterial Toxins; D004768:Enterotoxins; D029968:Escherichia coli Proteins; C027538:heat-labile enterotoxin, E coli