Microbes create heritable memory of viruses that attack them by inserting virus-derived spacers into CRISPR repeat cassettes, thus following the Lamarckian modality of evolution that dramatically accelerates adaptation [ 13].
We hypothesized that slow re-activation rates would endow this compartment with a "memory" of the virus subtypes that have undergone prior replication cycles, such that more intense and prolonged infection with drug-resistant virus would increase the fraction of drug-resistant mutants available for future re-activation.
Besides preventing eradication of HIV, the latent reservoir also serves as a memory of any virus species replicating during the course of HIV infection [9], [10], including drug resistant variants.
But memories of this virus and how it changed my lifestyle and that of my children will be with me forever.
Secondly, adult mice with pre-existing memory to virus were exposed to various TLR-ligands and analyzed for their quality of memory response.
One of the consequences of quasispecies dynamics is the presence of a molecular memory in virus populations consisting of genomes that were dominant at an earlier stage of the same evolutionary lineage.
Our data are consistent with a highly restricted TRBV repertoire of virus induced memory T-cells, and a type-1/CTL polarization of the T-cell mediated antiviral immune response [28], [30], [31].
If that fails, Plummer says his lab still may be able to answer the question by looking at the man's T cells and analyzing whether they have any immunologic memory of having see the new virus.
A professional cellist who lost nearly all of his memory after a virus destroyed parts of his brain has astonished doctors with his remarkable recall of music.
We also investigate CRISPRs (clustered regularly interspaced short palindromic repeats) because these structures, which keep a memory of past infections by bacterial viruses, may provide indirect clues about an environmental reservoir.
