Submitted on: 11 April 2019.
Revised on: 17 June 2019.
Accepted on: 27 July 2019.
___________________ANNALS OF MICROBIOLOGY---BMC
Submitted on: 18 March 2007.
Revised on: 08 June 2007.
Accepted on: 10 July 2007.
___________________ANNALS OF MICROBIOLOGY---BMC
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Submitted on: 13 November 2012.
Revised on: 08 December 2012.
Accepted on: 07 January 2013.
___________________ANNALS OF MICROBIOLOGY---BMC
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Submitted on: 24 February 1999.
Revised on: 25 May 1999.
Accepted on: 19 June 1999.
___________________ANNALS OF MICROBIOLOGY---BMC