10 points! Help me to understand Immune System
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10 points! Help me to understand Immune System

[From: ] [author: ] [Date: 12-05-19] [Hit: ]
wikimedia.org/wikipedia/c…#1)How do T-Killer cells kill? Do they kill the antigen and let the dead body floating away until it finds a macrophage that will phagocyte it and clean the way?Or do they both kill and phagocyte the antigen?#2)What is an antibody? It it a protein that binds with an antigen an neutralises it?......
this picture may help- https://upload.wikimedia.org/wikipedia/c…

#1)
How do T-Killer cells kill? Do they kill the antigen and let the "dead body" floating away until it finds a macrophage that will phagocyte it and clean the way?
Or do they both kill and phagocyte the antigen?

#2)
What is an antibody? It it a protein that binds with an antigen an neutralises it? Is it a thing that influences T-Helpers improving their memory? What is it??

#3)
Can a T-Helper cell duplicate into 2 T-Helpers? Or duplicate and become both 1 T-Helper and 1 T-Killer?

#4)
Where do macrophages come from? Bone marrow too?

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I would agree mostly with what's said above, apart from that T killer cells use perforins, a set of proteins that open up pores in the membrane of the target cell, to kill pathogens. Hydrogen peroxide would be a bit dangerous and there are enzymes in most cells that break it down very quickly.
http://en.wikipedia.org/wiki/Perforin if you want to know more about perforins
And also T helped cells duplicate into both t helper and t helper memory cells; t killer cells are totally separate entities so neither comes from one or the other.
And finally, T killer cells do just kill the cell and leave it alone. It dies and sometimes spreads its contents all over the place and sometimes just shrivels up and dies, but in any case it either becomes part of pus or cell debris or is phagocytosed by a macrophage.
I hope I helped, if you need anything else don't hesitate to ask and I'll do my best :)

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1)
A T-Killer will attach to a pathogen, and inject hydrogen peroxide (H2O2) into the cell to kill it.

2)
An antibody is a protein. They are made and secreted by plasma cells, these plasma cells come from B lymphocytes, it is what the B cells will divide into once they come in contact with a specific antigen, whether it be an antigen presenting cell (macrophage with the pathogen's antigen in its cell membrane) or they just come across it in the body. Plasma cells contain a lot of ribosomes and RER and golgi apparatuses because they need to produce proteins which are the antibodies!
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