Dienes phenomenon

Dienes phenomenon, when two identical Proteus cultures are inoculated at different points on the same plate of non-inhibitory medium, the resulting swarming of growth coalesce without signs of demarcation.[1][2] When, however, two different strains of Proteus are inoculated, the spreading films of growth fail to coalesce and remain separated by a narrow easily visible area.[2] The observation of this appearance, the Dienes phenomenon has been used to determine the identity or non-identity of strains in epidemiological studies.[2][3]

## References

1. ↑ "Essentials of Microbiology". https://books.google.com/books?id=iU2JDAAAQBAJ&q=Dienes+phenomenon&pg=PA268. Retrieved 28 December 2016.
2. ↑ 2.0 2.1 2.2 Budding, AE; Ingham, CJ; Bitter, W; Vandenbroucke-Grauls, CM; Schneeberger, PM (2009). "The Dienes phenomenon: competition and territoriality in Swarming Proteus mirabilis.". J Bacteriol 191 (12): 3892–900. doi:10.1128/JB.00975-08. PMID 19251852. PMC 2698385. http://dare.ubvu.vu.nl/bitstream/1871/20800/1/PMC2698385.pdf.
3. ↑ "dienes phenomenon – microregistrar". http://www.microregistrar.com/tag/dienes-phenomenon/. Retrieved 28 December 2016.

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