... Neurotransmitters are chemicals that send signals from one part of the brain to another and from the brain to the body. ...
... When cells receive certain signals, they make copies of a particular gene. The copies are made from RNA, a material related to DNA. The cell uses the RNA copy to make proteins — molecules that carry out many different tasks, both within and outside of cells. Genetic information is typically copied from DNA to RNA, a process called transcription. ...
HIV as a Retrovirus: Life Cycle and How It Infects a Cell
... When cells receive certain signals, they make copies of a particular gene. The copies are made from RNA, a material related to DNA. The cell uses the RNA copy to make proteins — molecules that carry out many different tasks, both within and outside of cells. Genetic information is typically copied from DNA to RNA, a process called transcription. ...
... These send signals to other immune cells, telling them to start fighting off infections.When HIV infects a CD4 cell, it takes over the cell’s process of making copies. Instead of helping the immune system, the infected cell starts making more copies of the virus. These copies are released into the body to infect more CD4 cells. ...
What Is Human Immunodeficiency Virus? What It Does and More
... These send signals to other immune cells, telling them to start fighting off infections.When HIV infects a CD4 cell, it takes over the cell’s process of making copies. Instead of helping the immune system, the infected cell starts making more copies of the virus. These copies are released into the body to infect more CD4 cells. ...
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