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Andrew has been a freelance life science writer for more than 20 years. Worked for academic institutions, startup biotechs, major biopharmaceuticals. Agriculture editor, Genetic Literacy Project. He has an MS in Biotechnology from the University of Maryland, and a BA in Physical Anthropology from the University of Pennsylvania.
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In the sci-fi novel Terminal World by Alistair Reynolds, a planet consists of zones with defined characteristics of matter interactions on a subatomic level. These conditions permit different levels of technology sophistication in various zones. For example, in the “Steamville zone” nothing more complicated than steam engines works – electronic schemes fuse irreversibly. Something like…
The importance of epigenetics in biology is increasingly acknowledged (if you’re not convinced yet, read my crash course). One commonly studied epigenetic mark is CpG methylation: cytosines that are directly followed by a guanine nucleotide (indicated by CpG), can be methylated, unlike non-CpG Cs. Since attachment of a methyl group to a cytosine can affect…
Whole genome sequencing (WGS) is becoming increasingly common. Doctors now routinely order it for patients with puzzling diseases. The NHS (National Health Service in the UK) has declared that it will sequence 100,000 genomes over the next few years. Increase WGS…increase ethical questions The direct-to-consumer company 23andme has been experimenting with whole exome sequencing (WES), and another company, DNA…
The success of whole genome sequencing (WGS) is shown in the quick and efficient scientific response to the 2011 outbreak of E. coli in Germany and France.1 German and French strains of E. coli were indistinguishable using standard tests. However, WGS analysis showed 2 single nucleotide polymorphisms (SNPs) in the German strains and 9 SNPs…
In the midst of all the cool new sequencing techniques and technologies out there today, you may have overlooked the tried and true method of Shotgun Sequencing. What is Shotgun Sequencing Anyway? Shotgun sequencing gets its name from the concept that a large sequence is essentially broken up in to many, many smaller pieces, similar…
Rapid genomic analysis offered by next generation sequencing (NGS) is ideal for personalized medicine approaches to clinical genetics, microbiological profiling, and diagnostic oncology. Many standard clinical samples are preserved as formalin-fixed, paraffin-embedded (FFPE) tissues, which presents obstacles for use in NGS analysis. FFPE tissue preservation has the benefit of keeping samples intact for histological examination…
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