Further Observations on the Spodogram of Bacillus cereus Endospore
AUTOR(ES)
Knaysi, Georges
RESUMO
Knaysi, Georges (Cornell University, Ithaca, N.Y.). Further observations on the spodogram of Bacillus cereus endospore. J. Bacteriol. 90:453–455. 1965.—Endospore spodograms of Bacillus cereus C3 were examined in dark contrast by use of the phase microscope with oil-immersion objectives. When the spodograms were mounted in air, their central part, or core, appeared bright; when mounted in water or oil, the central part appeared dark. The central part of the normal, unincinerated spore appeared bright in air and water, but dark in oil. This indicated that whether a body appears bright or dark when observed with the phase microscope does not depend only on its refringence relative to that of its surround, but also on its thickness and on the magnitude of the difference between its refractive index and that of its surround. Present observations showed that, contrary to a previous conclusion, mineral matter is more highly concentrated in the core than at the periphery of the endospore.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=315666Documentos Relacionados
- EFFECTS OF TEMPERATURES ABOVE THE MAXIMUM FOR GERMINATION ON THE ENDOSPORE OF BACILLUS CEREUS
- ON THE STRUCTURE AND NATURE OF THE ENDOSPORE IN STRAIN C3 OF BACILLUS CEREUS
- Further Observations on Certain Variants of Bacillus megatherium
- PRELIMINARY OBSERVATIONS ON THE GERMINATION OF THE ENDOSPORE IN BACILLUS MEGATHERIUM AND THE STRUCTURE OF THE SPORE COAT
- OPTICAL DENSITY OF THE ENDOSPORE OF BACILLUS CEREUS AND ITS RELATION TO GERMINATION AND RESISTANCE
