Sequencing machines: Roche 454

The first NGS platform Talking about the system of the Roche 454 means starting from the dawn of Next Generation Sequencing. The first three Next Generation Sequencing (NGS) platforms were produced by three independent companies which, a little later, were acquired by other industrial groups. System 454 is based on pyrosequencing, a technique based on […]

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Low-pass genome sequencing: a new perspective for genome-wide CNV analysis

Next-generation sequencing (NGS) has completely transformed the world of genetic testing, enabling us to sequence human whole exome or whole genome in one single experiment at an unprecedented scale, capacity and convenience. High-throughput sequencing based on short reads has empowered laboratories worldwide. We can now sift a huge amount of data to single out pathogenic […]

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Coverage in next-generation sequencing

Although the meaning of the term “coverage” may seem very simple, this term is often misused. In the context of Next-Generation Sequencing (NGS), coverage indicates the average number of reads that "cover" a specific target region. Coverage therefore always describes a relationship between the number of reads and a reference region and can be expressed […]

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