[Deviation from a Poisson distribution in a series of identical tests of E. coli cultures as a result of the effect of correlating factors of exo- and endogenous natures].
Vital cells number (VCN) in the sampling of E. coli populations was experimentally measured and distribution histograms were obtained. In most cases distributions show considerable deviation from Poisson model. VCN distribution histograms are polymodal, dispersion/arithmetical mean ratio may essentially differ from 1. The more essential differences from Poisson distribution were observed for populations with the higher cell concentration. Computer simulation of the VCN histograms indicated that additional parameters (such as those describing cellular interaction of different nature and/or other factors that influence random behaviour of cells) should be introduced into Poisson model to explain observed variations in VCN distribution histograms.
Gusev
V A
VA
Evdokimov
E V
EV
Neĭgel'
N I
NI
D015169:Colony Count, Microbial; D004926:Escherichia coli; D016012:Poisson Distribution
Otkloneniia ot raspredeleniia Puassona v riadu identichnykh prob kul'tury E. coli kak sledstvie deĭstviia korreliruiushchikh faktorov ékzo- i éndogennoĭ prirody.