Negative lag means that your organism really doesn't like what it finds
itself in. If it eventually 'recovers' it may mean that the organism has
underwent a beneficial mutation, or reconstructed/switched certain rare gene
cassettes on. In both cases, the experiment is invalid as far as the
original intent is concerned.
"John Gentile" <yjgent at home.com> wrote in message
news:B7C6E34E.2AAC%yjgent at home.com...
> Maybe it doesn't like the media you put it in or the atmosphere is wrong
> the organism.
> John Gentile Rhode Island Apple Group
>yjgent at home.com President
> "I never make mistakes, I only have unexpected learning opportunities"
>> > From: "craig" <craig6109 at remove-this.yahoo.com>
> > Organization: ntlworld News Service
> > Newsgroups: sci.bio.microbiology,bionet.microbiology
> > Date: Thu, 13 Sep 2001 22:45:12 +0100
> > Subject: Microbial lag phases
> > Hi,
> > I've been given an assignment to calculate the lag phases of several
> > microorganisms from graphs of their growth.
> > I don't have any problem with this, but what do I do if the organism
> > to decline in numbers almost from time 0? Do I assume there is no lag
> > at all (as there is no increase in numbers), or can an organism have a
> > negative lag phase?
> > Help!
> > Craig