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In order to elucidate the function of the cytoplasmic core (or rachis: a structure specific of the nematode gonads), we have carried out a cytological study of this structure in the free-living nematode Caenorhabditis elegans, in wild-type and in several mutant strains showing an abnormal gametogenesis. We also performed an ultrastructural radioautographic(More)
The potential of very high resolution Pléiades image texture for forest structure mapping was assessed on maritime pine stands in southwestern France. A preliminary step showed that multi-linear regressions allow a reliable prediction of forest variables (such as crown diameter or tree height) from a set of features automatically selected among a huge(More)
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