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Dialysis and ultrafiltration of a heat-stable enterotoxin from Escherichia coli



Dialysis and ultrafiltration of a heat-stable enterotoxin from Escherichia coli



Journal of Medical Microbiology 5(3): 337-343



A heat-stable enterotoxin from a strain of E. coli enteropathogenic for calves was subjected to dialysis and ultrafiltration, and the resulting fractions were tested in Thiry-Vella loops in calves. The active material was dialysable, and could be demonstrated in the dialysate. After 7 days' dialysis, the activity remaining in the dialysand was not significant. Ultrafiltration suggested that the molecular weight of most of the active material was between 1000 and 10000, although a small amount appeared to have a molecular weight less than 1000.

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Accession: 000060563

Download citation: RISBibTeXText

PMID: 4560751

DOI: 10.1099/00222615-5-3-337



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