ALA induced photodynamic effects on gram positive and negative bacteria.


In the present study we examined the production of high amounts of porphyrins upon induction by delta-aminolevulinic acid (ALA) in 9 bacterial strains. This was performed by solely inducing the porphyrin biosynthesis pathway. Four of the strains were Gram positive bacteria and five were Gram negative strains. All strains, except Streptococcus faecalis… (More)


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