Examples of sterol

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Visual observations of the chromatograms showed that the most abundant lipid fraction in all stages was free sterol.
Identification of sterol acceptors that stimulate cholesterol efflux from human spermatozoa during in vitro capacitation.
Effect of prematuration, meiosis activating sterol and enriched maturation medium on the nuclear maturation and competence to development of calf oocytes.
The free sterols, especially cholesterol, probably play a role in cell and tissue structure in all stages.
Total sterol and glutathione contents were not correlated with germination capacity.
The effects of meiosis activating sterol on in vitro maturation and fertilization of human oocytes from stimulated and unstimulated ovaries.
Meiosis-activating sterol promotes resumption of meiosis in mouse oocytes cultured in vitro in contrast to related oxysterols.
Clearly, further work is needed to explain the dramatic loss in free sterol content of the encysted metacercaria compared with the cercaria.
Subsequent cultures grown after repeated sub-culturing in the presence of cycloheximide proved to be devoid of sterol.
The weights of free sterol in the sample zones were determined automatically from their areas by interpolation from the calibration curve.
Meiosis-activating sterol protects oocytes from precocious chromosome segregation.
Therefore, helminths rely on the uptake of substances which have a basic sterol structure from the host's intestinal lumen.
As previously mentioned, helminth parasites lack basic pathways for sterol synthesis, and hence rely on the uptake of these chemicals from the host.
Release of cystogenous material may also result in loss of free sterol or conversion of this lipid fraction into other substances.
The chloroform layer was collected and used for the determination of phospholipids and sterols.
The cercaria showed 6.5 times more free sterol than the encysted metacercaria.
Chemical structure of sterols that activate oocyte meiosis.
Chemical structure of sterols that activate oocyte maturation.
Quanti®cation of the free sterol revealed mean weights of 2.7 6 0.64 ng per redia, 0.53 6 0.023 ng per cercaria, and 0.081 6 0.0098 ng per encysted metacercaria.

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