Analysis of polyamine content in different EIEC <i>and S. flexneri</i> strains.

<p>Values reported are in nmol per 10⁸ cells and represent the average ± standard deviations. <i>E. coli</i> K-12 MG1655 has been used as reference. N-SPD: Acetyl spermidine; PUT: Putrescine; CAD: Cadaverine; SPD: spermidine. Student's t tests were performed comparing PUT, SPD, NSPD and CAD concentration in EIEC and <i>Shigella</i> strains with the polyamine concentration detected in <i>E. coli</i> K12 MG1655.</p><p>*denotes 0.05>p≥0.01;</p><p>**denotes p<0.01.</p><p>Analysis of polyamine content in different EIEC <i>and S. flexneri</i> strains.