Journal ArticleDOI
Quantitative DNS-Bestimmungen von Ameisenhirnzellen
TLDR
In this article, a Nestes zeigten ein Extinktionsmaximum nach 1 Std Aufenthalt im Schiffschen Reagens, die eines anderen Nestes nach 5 Std.Abstract:
Gehirnzellen von Myrmica laevinodis-Arbeiterinnen wurden Feulgengefarbt und dabei 1–6 oder 15 Std im Schiffschen Reagens behalten. Die Farbintensitat wurde mikrospektrophotometrisch bestimmt. Die Tiere des einen Nestes zeigten ein Extinktionsmaximum nach 1 Std Aufenthalt im Schiffschen Reagens, die eines anderen Nestes nach 5 Std. Die Farbedauer ist also ein weiterer Faktor, der bei quantitativen DNS-Bestimmungen zu berucksichtigen ist.read more
Citations
More filters
Journal ArticleDOI
Evidence for dosage compensation in parthenogenetic Hymenoptera.
TL;DR: In these parthenogenetic wasps, a mechanism must exist that compensates during later development for the initial two-fold difference in the chromatin content of somatic nuclei in haploid male and diploid female embryos.
Journal ArticleDOI
Quantitative Bestimmung von RNS-Fraktionen im Gehirn frisch geschlüpfter Bienen (Apis mellifica)
TL;DR: In the brain of the honeybee (Apis mellifica), it was found that the rRNA content decreases rapidly during the first 2 days of adult life, and the possibility is discussed that these results reflect changes in RNA metabolism that can be related to the sequences of activity observed in the bees during thefirst 9 days after hatching.
Journal ArticleDOI
DNA-Feulgen value in brain cells of the adult worker honeybee dependent on age.
W. Hensel,E. Hauschteck-Jungen +1 more
TL;DR: An feulgengefärbten G0-Kernen der Corpora pedunculata von Bienengehirnen wurde die relative DNS-Menge photospektrometrisch bestimmt.
References
More filters
Book ChapterDOI
Quantitative Aspects of Nuclear Nucleoproteins
TL;DR: This chapter presents the tests devised to check the actual performance of measuring instruments, and obstacles, such as inhomogeneity, which has been estimated on theoretical grounds to give very large errors in measurements on nuclei, are discussed.
Journal ArticleDOI
Nucleic acid starvation of chromosomes inTrillium
Cyril Dean Darlington,L. La Cour +1 more
TL;DR: The threshold for differentia and anaphase : the reproductive error and the demand of nuoteic acid andocycly and gene reproduction are studied.
Journal ArticleDOI
La teneur du noyau cellulaire en acide désoxyribonucléique à travers les organes, les individus et les espèces animales
R. Vendrely,C. Vendrely +1 more
TL;DR: It seems to appear that the nucleus of the somatic cells contains constantly the same amount of desoxyribonucleic acid, whatever tissue and animal the authors studied within the same species; and this amount is just the double of that of the haploid cells in the same animal.
Journal ArticleDOI
Conditions influencing the intensity of the feulgen reaction
TL;DR: The small lymphocyte, which has previously been found by several workers to bind about 10% less Feulgen dye than other diploid cells, was found to have a similar lowerFeulgen intensity after 5 N HCl hydrolysis at room temperature.
Journal ArticleDOI
Deoxyribonucleic acid cytophotometry of stained human leukocytes. I. Differences among cell types.
TL;DR: The deoxyribonucleic acid (DNA) content of individual human leukocytes was estimated cytophotometrically using visible light and spreads stained either with gallocyanin-chrome alum following ribonuclease digestion or with the Feulgen reaction.