Credit: Salva Duran
Richard Feynman, one of the most respected physicists of the twentieth century, said What I cannot create, I do not understand . Not surprisingly, many physicists and mathematicians have observed fundamental biological processes with the aim of precisely identifying the minimum ingredients that could generate them. One such example are the patterns of nature observed by Alan Turing. The brilliant English mathematician demonstrated in 1952 that it was possible to explain how a completely homogeneous tissue could be used to create a complex embryo, and he did so using one of the simplest, most elegant mathematical models ever written. One of the results of such models is that the symmetry shown by a cell or a tissue can break under a set of conditions. However, Turing was not able to test his ideas, and it took over 70 years before a breakthrough in biology technique was able to evaluate them decisively. Can Turing s dream be made a reality through Feynman s pro
SCOTS experts warned six months ago that international travel was a main driver of Covid-19 infections but the UK’s rigorous test-before-travel scheme was not introduced until yesterday, allowing the virus to circulate freely in Scotland, it has emerged. New rules requiring arrivals to take a negative coronavirus test up to 72 hours before departure and self-isolate for up to 10 days after entering the UK came into effect at 4am yesterday as travel corridors offering exemptions were scrapped. The move is part of the Government’s attempts to prevent new strains of Covid-19 entering the UK. Passengers arriving in the UK yesterday faced long queues of up to two hours at the border as new coronavirus travel rules came into force. Self-scan gates were shut as officals checked all passengers for proof of a negative Covid-19 test result.
SCOTS experts warned six months ago that international travel was a main driver of Covid-19 infections but the UK’s rigorous test-before-travel scheme was not introduced until yesterday, allowing the virus to circulate freely in Scotland, it has emerged. New rules requiring arrivals to take a negative coronavirus test up to 72 hours before departure and self-isolate for up to 10 days after entering the UK came into effect at 4am yesterday as travel corridors offering exemptions were scrapped. The move is part of the Government’s attempts to prevent new strains of Covid-19 entering the UK. Passengers arriving in the UK yesterday faced long queues of up to two hours at the border as new coronavirus travel rules came into force. Self-scan gates were shut as officals checked all passengers for proof of a negative Covid-19 test result.
Date Time
New COVID-19 variant growing rapidly in England
The new SARS-CoV-2 variant is growing rapidly, is more transmissible than other variants, and affecting a greater proportion of under 20s.
New variant of concern
This higher transmissibility will make control more difficult and further accentuates the urgency of rolling out vaccination as quickly as possible. Professor Neil Ferguson Imperial College COVID-19 Response Team
All viruses undergo genetic changes which are called mutations, and through selection pressure can result in different variants. The variant of SARS-CoV-2 (the virus causing COVID-19) originally termed lineage B.1.1.7, was detected in November 2020 and is rapidly spreading across England. Several genetic changes (substitutions and deletions) have immunological significance and are associated with diagnostic test failures. The absence of S gene target in an otherwise positive PCR test appears to be a highly specific marker for the B.1.1.7 lineage, which h
Why It Pays to Play Around - Issue 94: Evolving nautil.us - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from nautil.us Daily Mail and Mail on Sunday newspapers.