New answers tagged

0

At its core, evolution is based on discrete events, and is not a progression. At a grander scale, the accumulation of many evolution events may seem to provide an adaptation to a situation; but, really it isn't the evolution that does this, it's the natural selection. In general, the portion of the population with genes causing health problems remove their ...


1

Acquired Hemophilia is an AutoImmune Disease, hence it is possible to transfer it from mother to child through breastfeeding milk. The antibodies subjected to autoimmune disease also passes into the infant or baby from breastmilk in addition to the healthy antibodies. These abnormal antibodies will act as an inhibitor to the enzyme responsible for production ...


2

Your question spans two activities of T-cells that are related to each other: migration and activation. T-cells that usually stay in lymphoid organs migrate to non-lymphoid organs with different mechanisms for each T-cell subtype. When migrated to non-lymphoid organ, the T-cells move through the organ looking for infected cells. Migration As you can see in ...


-3

T-cell does not inspect any cell until the cell shows a piece of the "non-self" antigen on it by the MHC. The helper T-cell connects with the antigen which is on the cell's surface. The T-cell sorts the cytokines that activate the cytotoxic T-cell to divide and form a colony of cytotoxic cells. The colony of cytotoxic cells then attack the "non-self" ...


2

Antibodies and antidotes are two entirely separate concepts. An antibody is an immunoglobulin protein produced by B cells that bind to antigens, which are substances that induce an immune response. The specific region where the antibody binds the antigen is called the epitope. An antidote is a substance that counteracts a poison, or the effects thereof. It ...


3

From this article: Researchers found that when the virus productively infects the few permissive CD4 T cells present, death occurs through apoptosis mediated by an enzyme called caspase-3. But when HIV abortively infects nonpermissive CD4 T cells, death occurs by pyroptosis, which depends on the activation of caspase-1. It turns out that the vast ...


0

There is many possible antibacterial natural treatment using probiotics provided by natural product such kambucha,Baikkimchi,kefir (1,2,3).In the other side,plant oil extracts also studied in vivo and in vitro (4,5,6) ,but in general, all result was relative that we can not be cured 100% with such therapy. source: ...


0

Primary Reference: Cellular and Molecular Immunology, 8th ED. Statement 1 is only part true. B cells produce b cell receptors of a specific paratope, that are randomly determined during maturation. The process of V(d)j recombination, where productive rearrangements in the heavy chain and light chain genes, produces a primary CHtranscript consisting of ...


0

Statement 1 is true. Statement 2 is false. My explanation is from the perspective of immune cell development: The antibody-producing B cells are called plasma B cells. Plasma B cells are differentiated from a single naïve B cell (undifferentiated B cell). The naïve B cell have all the cell structure. However, naïve B cell can also be differentiated into ...



Top 50 recent answers are included