The revertants Hall found fell into three different classes (I, II and III). Class III grew the fastest (wild type rate), Class II grew slower and class I grew the slowest. Full article >>>
making it unable to synthesize the amino acid histidine (His) from the ingredients in its culture medium. However, some types of mutations (including this one) can be reversed, a back mutation, with the gene regaining its function. These revertants ... Full article >>>
(Date:7/2/2009)...d organisms and a domain unto themselves, quite ap...and higher organisms. Many species live under extr...rocesses shared neither with bacteria nor with euk...produce methane gas out of carbon dioxide and hydr...n, involves the cofactor known as F0 or F420 which...
(Date:7/2/2009)...oup of proteins that are highly effective at killi...ping new types of antibiotics. , Researchers fro...rded 3.3m from the Biotechnology and Biological Sc...family of proteins known as colicins force their w... The team, led by Professor Colin Kleanthous, fro...
(Date:7/1/2009)...ague, Ebola and Rift Valley Fever are being target...nal partnership involving African researchers and .... The Southern African Centre for Infectious Disea...ary institutions from five African countries and t...ons to detect, identify and monitor infectious dis...
(Date:7/1/2009)...formation of the centromere, a key cellular struct...tion and accurate cell division, has just earned h...ous EMBO installation grant, of 50,000 euro per ye...oved from California to the Instituto Gulbenkian d... Epigenetic Mechanisms group. The Nature Cell Bio...
... brain,s ability to reorganize itself - strengthen...ding or subtracting those connections - allows it ...nd waking, and focus attention on objects of inter...ity. Chemical synapses, junctions where neurons co...n implicated in plasticity. Now, for the first tim...
... most people, just a whiff of food that has made t...f nausea ?and to prevent them from eating that foo...oluntary, and so fundamental to basic biology that..., researchers have now shown, quickly learn to avo...m ill. , The new study, led by Howard Hughes Medi...
...tudy by a leading UK fertility centre has found th... forward as potential sperm donors fell sharply af...s that changes in the law would be removing the ri...ing to a significant decline in the numbers recrui...ertility Centre at LIFE to call for urgent action ...
... of the great challenges for treating Parkinson,s ...getting medicine to the right place in the brain. ... types of cells and structures, and it is fortifie...ls and glial cells -- the brain,s structural build... of most drugs from the bloodstream. , But now sc...