نتایج جستجو برای: small supernumerary marker chromosome ssmc
تعداد نتایج: 1015567 فیلتر نتایج به سال:
CASE REPORT The marker was ascertained during cytogenetic diagnosis of a 5 year old girl with marked developmental delay and mild facial dysmorphism. Body measurements were birth length 49 cm, birth weight 2965 g, and OFC 34 cm. At the age of 8.5 years, height was 131 cm, and weight was 37 kg (>97th centile) as a result of hyperphagia which developed two years ago. Dysmorphic signs included hyp...
Neocentromeres are fully functional centromeres found on rearranged or marker chromosomes that have separated from endogenous centromeres. Neocentromeres often result in partial tri- or tetrasomy because their formation confers mitotic stability to acentric chromosome fragments that would normally be lost. We describe the prenatal identification and characterization of a de novo supernumerary m...
A supernumerary minichromosome has been detected in a severely malformed patient. Attempts at identifying the marker by conventional approaches were unsuccessful. The physical isolation of the minichromosome by fluorescence activated sorting, molecular cloning of its DNA, and in situ hybridisation experiments performed with single copy DNA probes allowed us to show that it was derived from a re...
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