true dat ma broy what i really think is dat u should pay more attention in class or look in a textbook aii bb but i dont really no u tell me or hmu ok bb
No HIV is not bacteria or any other organism. HIV is a retrovirus. It infects the T helper cells of human, cause AIDS disease.No, it is a virus.No, it is not a virus.
_crenate
If you mean when cells form again. Yes they are very much necessary because every minute at least a thousand up to million cells die in the human body. But because of cell reproduction every minute a million cells reproduce without it the human race would have disappeared since the first human was settled on earth.
The Human Immunodeficiency Virus (HIV) seems to only infect the CD4 (or T-helper) cells of the immune system. The CD4 cells are responsible for activating and directing other immune system cells. HIV also infects macrophages and microglial cells that express the CD4 molecule on their surface. The virus can also infect a subtype of myeloid dendritic cells MDC-1.
Aside from different DNA, there isn't really much of a difference between animal cells and human cells. Human cells are an example of an animal cell.
If humans disappeared the bears will survive and won't get eaten.
No HIV is not bacteria or any other organism. HIV is a retrovirus. It infects the T helper cells of human, cause AIDS disease.No, it is a virus.No, it is not a virus.
antigen. Helper B and T cells most likely.
what might happen if the human body did not have specialized cells tissue organs and organ systems to maintain homeostasis
The HIV virus kills the helper T-cells which are part of your immune system.
_crenate
If you mean when cells form again. Yes they are very much necessary because every minute at least a thousand up to million cells die in the human body. But because of cell reproduction every minute a million cells reproduce without it the human race would have disappeared since the first human was settled on earth.
The Human Immunodeficiency Virus (HIV) seems to only infect the CD4 (or T-helper) cells of the immune system. The CD4 cells are responsible for activating and directing other immune system cells. HIV also infects macrophages and microglial cells that express the CD4 molecule on their surface. The virus can also infect a subtype of myeloid dendritic cells MDC-1.
T cells are part of the adaptive immunity. There are two major types of T cells: CD4+ T helper cells and CD8+ T cytotoxic cells. T helper cells primarily function in humoral immunity whereas T cytotoxic cells are important in cell mediated immunity. T helper cells produce cytokines to activate other immune system components like macrophages, B cells, etc. whereas T cytotoxic cells primarily kill infected cells.
T cells are made in the red bone marrow but specialize into t cells outside the marrow in the thymus, hence the T in Tcells. two types of t cells are cytotoxic effector cells and helper t cells. think of cytotoxic t cells as the drunk guy in the bar that wants to fight everyone (and is a good fighter by the way) and the helper t cells are the friends who show him who to fight and provides him with the weapons to fight. CTC can attach to and destroy cells carrying antigens Helper T cells 1. present antigen to CE cells and plasma B cells to activate them into action and 2. produe powerful immune protein called cytokins which can stimulate the lymphocyte cell disvision.
#1: Human computer.
photosynthesis would stop,temperature will drop to zero,ocean surfaces would freeze,extinction human etc