为探究无细胞 DNA（cfDNA）中富含 GC 的 DNA（GC-DNA）对癌细胞的作用，研究人员开展了 GC-DNA 对野生型 MCF7 细胞（wt MCF7）和 TLR9-/-MCF7 细胞生存基因转录活性影响的研究。结果发现 TLR9-/-MCF7 细胞经 GC-DNA 刺激后相关信号级联活性及生存基因表达下降，该信号级联可作 ...

Geoff Bennett: The genetic testing company 23andMe has filed for bankruptcy. And its potential sale has raised alarms about what could happen to the DNA data of its millions of users. 23andMe was ...

Feb. 27, 2025 — Researchers examined dozens of bird species in museum collections looking for differences in the feathers and bodies between birds that can fly and birds that can't. They found ...

DNA replication is the biological process by which an exact copy of a deoxyribonucleic acid (DNA) molecule is created and it is the basis for biological inheritance. Each of the two strands of the ...

DNA (deoxyribonucleic acid) is the nucleic acid polymer that forms the genetic code for a cell or virus. Most DNA molecules consist of two polymers (double-stranded) of four nucleotides that each ...

Genetic testing, also known as DNA testing, involves obtaining DNA from a sample of cells in your body to identify specific genes, chromosomes, or proteins, including those that are faulty (known as ...

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You can apply online or on paper. Apply on paper only if you’re not eligible to apply online. Don’t apply both ways. The fees are the same to apply online or on paper: Adult (18 or older): $630 ...