Abstract: An assembly for the extraction of respiratory gas samples may include a container for receiving a respiratory gas sample, a piston arranged in the container in a movable and gas-sealing manner, and a gas feed into the container, which gas feed can be connected to a mouthpiece.

Abstract: The invention relates to a method and kit for enriching miRNA nucleic acids molecules of interest in a sampe by selective removal of nucleic acid species, in particular miRNA species, which are not of interest. The invention is based on the surprizing and previously unknown information that only a few individual miRNA species make up the majority of all miRNA species in a sample. Selective removal of these species prior to detection of miRNA nucleic acids molecules will improve assay time, assay sensitivity, and reproducibility.

Abstract: The invention relates to methods for diagnosing multiple sclerosis with miRNA markers. Diagnosis of multiple sclerosis (MS) can be challenging in patients with atypical presentations and during a first neurological deficit possibly related to inflammatory demyelination. Towards the identification of biomarkers for diagnosis of MS, a comprehensive analysis of miRNA expression patterns was obtained. Significantly deregulated miRNAs were identified, which have previously not been related to MS according to the microRNA disease database. These miRNAs could potentially serve as future diagnostic biomarkers for MS and help in diagnosis, monitoring disease activity, and evaluation of treatment responses in patients with MS.