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How many IFVs and APCs will you normally find in the mechanized infantry company?
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∙ 12y ago
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∙ 12y ago
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Where are Class II molecules found?
Presented by APCs as MHC-exogenous peptide complex
Class II MHC molecules are found only on which of the following?
Presented by APCs as MHC-exogenous peptide complex
Langerhans cells are the mechanism of action of which function of skin?
They are the antigen presenting cells (APCs) of the skin. They capture antigens and then migrate to the lymph nodes where they present to T cells.
When IL-2 is secreted by antigen-specific T cells activated due to presentation of antigen by APCs What happens to naive antigen-nonspecific T cells in the vicinity?
They proliferate due to their exposure to IL-2
Where is the RPG in Metal Gear Solid 4?
You can find one in the Middle East near a door that leads underground to the militia base. Several militia in the Middle East wield RPGs when trying to take out the APCs.
What are two things necessary to trigger a T helper cell to do its job?
It needs stimuli from APCs. This allows CD4 to interact with MHC-epitope complex on APC. It will also require costimuli from APC (the CD80/86) which interacts with CD28 on T helper cells.
Are the Marines stronger than the Army?
The Army has more manpower and a majority of the heavy equipment (tanks, APCs, etc.), while the Marines are primarily a light infantry force, but have the advantage of being more mobile and overall easier to deploy then the majority of the Army.DUH!
Were machine guns used a lot in World War 1?
Machine guns were mainly used for mowing down large groups of enimies at a fast rate of fire. In modern armies, machineguns have several uses, depending on the size and user of the machinegun. Lightweight machineguns (e.g. M249 SAW, Minimi, and RPK) and almost exclusively hand-held, and are the main fire support weapon of an infantry squad. Most armies distribute these weapons on about a 4:1 ratio of assault rifle:LWMG. At the squad level, the LWMG provides surpressive fire - fire intended primarily to prevent the enemy from moving or returning fire - though it also is intended to break up large infantry charges. Medium machineguns (e.g. MAG, PK, and M60) are sometimes deployed at the platoon level for infantry, and generally are the primary anti-infantry weapon on vehicles. While infantry often use them in the same manner as LWMGs, they also tend to be less used for supression, and more for anti-assault and light anti-vehicle (e.g. against unarmored civilian vehicles). Mounted on vehicles, the MGM is used against any infantry target (as the primary weapon will most likely be completely unsuitable for such a purpose), and also against unarmored vehicles. Heavy machineguns (e.g. M2HB and the DShK) are primarily vehicle mounted or used for fixed defenses. They are almost exclusively used against light or unarmored vehicles (civilian vehicles up through armored cars and APCs), and as "anti-material" weapons (e.g. for punching through brick or cement block walls). They also can be used against helicopters or other slow-flying aircraft (such as RPVs). They have too slow a rate of fire to be useful against jet aircraft, and are generally unsuitable for anti-infantry work (though they can serve there in a pinch).
What caused the APCs to catch fire?
All the ammo that was packed in there... the smallest spark of any kinda could send it up in flames. Plus the fuel bladder was located below the floorplates .
What function is the lymphatic system?
lymphatic system is the one that is responsible of the re absorption of fluids (interstitial fluid) accumulating in the intravascular back to the circulatory system. it carries WBC (White Blood Cells) and build the bone's lymphnode. The lymph transports antigen-presenting cells (APCs), such as dendritic cells, to the lymph nodes where an immune response is stimulated. it absorbs and transports fatty acids and fats as chyle from the digestive system.
Is the James Farley post office in NYC open on Monday veterans day?
The James A. Farley Post Office in New York City is open 24 hours a day 7 days a week 365 days a year. Window services close at 10PM Monday through Friday, 9PM Saturdays and 7PM Sundays. The lobby is always open with capable self-serve kiosks (APCs - Automated Postal Centers).
What are four types of antigens?
Antigen-presenting cell - TypesThere are three main types of professional antigen-presenting cells:Dendritic cellsMacrophagesB-cellsThese APCs are very efficient at phagocytosis, which allows them to present exogenous as well as internal antigens. More importantly for their function in stimulating naive T cells, they possess co-stimulatory molecules: cell-surface molecules that deliver essential signals to T cells, allowing the T cells to become activated and mature into fully functional forms.Dendritic cells, and to a lesser extent macrophages, have the broadest range of antigen presentation and are probably the most important APC. Activated DCs are especially potent TH cell activators because they constitutively express co-stimulatory molecules such as B7. B cells, which express antibody, can very efficiently present the antigen to which their antibody is directed, but are inefficient APC for most other antigens. As well, there are specialized cells in particular organs (e.g. microglia in the brain, Kupffer cells in the liver) derived from macrophages that are also effective APCs.
