[A completely automatic sample combustion device for the technic of measuring H-3 and C-14 in the liquid scintillation spectrometer].
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Autoanalysis↗
Biomedical subjects
W Hülsen
Publications and source records attributed to W Hülsen.
[Do isolated Chlorella coats absorb glucose?].
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Absorption↗
"Dry" counting of 32P in liquid scintillation counters.
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Eukaryota↗
[On the concentration dependency of the uptake of various sugars by Chlorella pyrenoidosa].
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Arabinose↗
[Isolation and properties of the cell envelope of the green alga Chlorella fusca (author's transl)].
Chlorella cell envelopes were isolated by a mechanical procedure. The obtained morphological structure shown in an EM-picture has a mean density of rho=1.42. A characteristic chemical property of the envelope is the percentage of mono- and di-unsaturated C18-fatty acids which is considerably higher than that of intact cells. With 14C labelled sugars a selectivity of the hexose uptake could be shown, galactose uptake amounting only to about one fifth that of glucose and mannose. The uptake shows a temperature maximum. Part of the 14C registered after a 30 min uptake period is released by high concentration of unlabelled glucose, 20% are irreversibly fixed.
Cell Fractionation↗