In Patient 2B2, the results of a delayed-type hypersensitivity epidermis test were adverse for tuberculin but positive for candida. AIRE was been shown to be of wild-type sequence in Patient 2B2. The lack of a specific immunologic disorder led us to use a positional cloning method of identify the patients’ underlying genetic defect. Genetic Linkage Analysis Analysis of the SNP genotypes showed a region of best segregation on chromosome 9 , provided that Patient 1B1’s bout of candida infection was the consequence of a phenocopy. This locating was verified by genotyping four microsatellite markers, yielding a peak multipoint lod score of 3.6 . There were 121 genes in the maximal linkage interval defined by the microsatellite markers D9S2157 and D9S1838 .Gary Van Berkel and his colleagues of Oak Ridge National Laboratory . Van Berkel can be an innovator in neuro-scientific mass spectrometry and may be the recipient of several awards for his contributions in the field. Related StoriesThermo Scientific Scientific launches HyPerforma SUM DS 300 system for multiple usesThermo Fisher Scientific launches Brilliance GBS AgarNew pre-validated fluorinated fragment library boosts medication screening efficiency’Our contract with AB SCIEX further strengthens our position as the leader in ambient ionization mass spectrometry systems,’ stated Justin Wiseman, CEO and President of Prosolia.