Further Observations On Escherichia Coli Enterotoxins With Particular Regard To Those Produced By Atypical Piglet Strains And By Calf And Lamb Strains: The Transmissible Nature Of These Enterotoxins And Of A K Antigen Possessed By Calf And Lamb Strains
Ligated intestine tests in pigs, piglets, calves and lambs indicated that the enterotoxin produced by a group of atypical pig strains of Escherichia coli was probably identical with that produced by enteropathogenic calf and lamb strains. It resembled the ST rather than the LT form of the enterotoxin produced by typical pig enteropathogenic strains.
The enterotoxin produced by some of the atypical strains and the calf and lamb strains, like that produced by some typical pig strains, was probably controlled by a transmissible plasmid. So was a K antigen common to many of the calf and lamb strains. Infection experiments indicated that this antigen was important in the pathogenesis of E. coli diarrhoea.
MoonH. W.,
WhippS. C.1970; Development of resistance with age by swine intestine to effects of enteropathogenic Escherichia coli. J. Infect. Dis 122:220
SmithH. W.,
GylesC. L.1970a; The relationship between two apparently different enterotoxins produced by enteropathogenic strains of Escherichia coli of porcine origin. J. Med. Microbiol 3:387
SmithH. W.,
GylesC. L.1970b; The effect of cell-free fluids prepared from cultures of human and animal enteropathogenic strains of Escherichia coli on ligated intestinal segments of rabbits and pigs. J. Med. Microbiol 3:403
SmithH. W.,
HallsSheila.
1967a; Observations by the ligated intestinal segment and oral inoculation methods on Escherichia coli infections in pigs, calves, lambs and rabbits. J. Path. Bact 93:499
SmithH. W.,
HallsSheila.
1968; The transmissible nature of the genetic factor in Escherichia coli that controls enterotoxin production. J. Gen. Microbiol 52:319
SmithH. W.,
LinggoodMargaret A.1971a; The transmissible nature of enterotoxin production in a human enteropathogenic strain of Escherichia coli. J. Med. Microbiol. 4:301
SmithH. W.,
LinggoodMargaret A.1971b; Observations on the pathogenic properties of the K88, Hly and Ent plasmids of Escherichia coli with particular reference to porcine diarrhoea. J. Med. Microbiol. 4:467
Further Observations On Escherichia Coli Enterotoxins With Particular Regard To Those Produced By Atypical Piglet Strains And By Calf And Lamb Strains: The Transmissible Nature Of These Enterotoxins And Of A K Antigen Possessed By Calf And Lamb Strains