Structure- surrounded by proteins. HAve viral RNA and enzymes inside.
Attacks T-helper cells, binding to the CD4+ protein on their surface, enters via endocytosis, RNA released.
Inserts its own RNA into the host cell. Which turns into DNA via reverse transcription.
Viral DNA moves to the nucleus, leading to the production of viral RNA, causing viral proteins, complete viruses are released via exocytosis, multiplying.
-Mutates in the protein synthesis cause new proteins outside the cells, causing the binding of another receptor, new virus particles are synthesized, during exocytosis these rupture the plasma membrane, killing the cells. When it turns to AIDS
Symptoms: fever, chills, fatigue, nausea, cough w/ phlegm.
Gradually attacks the immune system which is our body's natural defence. This makes it harder to fight off infections and disease.
A
IDS is caused by HIV, when HIV is advanced. Last stage of HIV when the body can no longer defend itself, very dangerous.
Infected T helper cells are destroyed leading to a reduced number. Since T helpers are needed for B cells and antibodies, antibodies cannot be made.
No cure
Virus, inserts its own RNA into the host cell
HIV RNA is inserted into the macrophage genome, causing transcription to HIV particles weakens the immune system.
Transmits via:
Sexual intercourse
Transfusion of blood
Pregnancy / childbirth
Sharing of dirty needles.