Hi there!
Meiosis is a type of reproduction where two divisions occur. It is when gametes, sex cells, divide. In prophase of meiosis, it is similar to that of mitosis, as in the spindle fibers develop as well as centrioles. First, homologous (pairs) of chromosomes line up in the center of the cell. Next, spindle fibers pull the pairs apart, leaving one chromosome of each pair on each side. Then, the nuclear material divides as the spindle fibers and centrioles go away. Lastly, the cytoplasm divides, leaving two cells. Meiosis two starts out with prophase again. In prophase, the DNA condenses and forms short chromosomes as well as spindle fibers and centrioles developing. Next, the chromosomes (there is only one chromosome, made up of two sister chromatids) line up in the center of the cell. Next, the spindle fibers pull the chromosomes apart, pulling one chromatid to each side of the cell. Then, the nuclear material divides and the spindle fibers and centrioles disappear. Lastly, the cytoplasm divides, leaving four cell in total.
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Tissue-Resident Memory (TRM) can be found in both CD4+ and CD8+ T cell lineages and in a variety of tissue locations.
What are resident memory T cells?
- Resident memory T cells are long-lasting, non-recirculating memory T cells found in epithelial barrier tissues such the gastrointestinal tract, lungs, skin, and reproductive tract.
- In line with a recent study that found memory T cells specific for persistent viruses in human tonsils, the predominance of TRM-phenotype cells in all human lymphoid tissues include the spleen, lymph nodes, and tonsils, and reflect their long-term persistence over decades and/or continual pathogen exposure.
- The cumulative encounter of different antigens over the course of a human lifetime may be the cause of TRM persistence in various places. The study of various diseases, from infection to cancer to inflammation and autoimmune disease, is becoming increasingly popular as a result of TRM.
Learn more about the Memory T cells with the help of the given link:
brainly.com/question/23423029
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Hmm.. This is confusing I know, but i believe the last time i saw a question like this it is the lack of a maintaining homeostasis. A fire can not do this on its own accord.
Blood typing is an example of codominance
