Now a 4-year study which analysed over 540 000 births in Greater London (Fig. 1) shows that 3% of all full-term babies born with low birthweight (<2500 g) is attributable to air pollution from London traffic. The study found a 15% increase in risk of low birthweight for every ...
Virus genetics The effect of mutations on the phenotype In the case of viruses, mutations may lead to different phenotypic changes. Mutations which affect the third base in a code word may be completely silent and have no influence on virus replication. This is the case if the mutation hits ...
The virus mutates in the carrier's body... 病毒会在携带者体内发生变异。 柯林斯高阶英语词典 A newer anti-HIV drug called pyridinone caused HIV to mutate into a form which could not reproduce or infect new cells... 一种叫作吡啶酮的新型抗艾滋病药物能促使艾滋病毒变异,使其不能繁殖,也不会再...
Further, the degree of increase of U in SARS-CoV-2 variants correlates with enhanced production of cytokines, such as TNF-α and IL-6, in cell lines when compared with stimulation by the ssRNA sequence of the isolated virus in Wuhan. Therefore, RNA editing is a factor for mutation bias ...
It is unlikely that the transgenerational effects observed here are due to a cytoplasmically inherited factor such as a virus, prion, or mycoplasma present in the embryonic stem cells used to generate the Mtrrgt mouse line. This is because we have preliminary data from two other independently de...
The term KRAS is generally referred to as KRAS-4B due to the high level of mRNA encoding KRAS-4B in cells17. The crystal 1State Key Laboratory of Oncology in South China; Collaborative Innovation Center for Cancer Medicine; Guangdong Esophageal Cancer Institute, Sun Yat-Sen University Cancer ...
food, and pickled vegetables. However, the incidence rates of ESCC are broadly in decline due to improved living standards in China. In Western countries, the reduction of ESCC incidence is considered primarily due to a large-scale decline in cigarette smoking6. For certain types of cancer, ...
In biology, a mutation is an alteration in the nucleotide sequence of the genome of an organism, virus, or extrachromosomal DNA. Viral genomes contain either DNA or RNA. Mutations result from errors during DNA or viral replication, mitosis, or meiosis or other types of damage to DNA (such ...
In biology, mutation meansa permanent change of the nucleotide sequence of the genome of anorganism, virus, or extrachromosomal DNA or other geneticelements. Mutationsoccur main in hereditary ways and acquired ways, and mainresult fromdamage to DNA which is not repaired or to RNA genomes, errors...
transposition- (genetics) a kind of mutation in which a chromosomal segment is transfered to a new position on the same or another chromosome mutagenesis- an event capable of causing a mutation gene mutation,point mutation- (genetics) a mutation due to an intramolecular reorganization of a gene...