Photodynamic treatment of Proteus mirabilis gives rise to changes in the cell envelope as can be detected by the behaviour of cells during lysis: lysis of cells proceeds more readily than that of untreated cells, measured by the liberation of labelled DNA. After photodynamic treatment the cell envelope is restored to the control levels. This repair process takes place within 5 min in broth as well as in buffer solutions.
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Jacob et al. (1975) studied this question.
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