4. HIV/AIDS and the Immune System
HIV (Human Immunodeficiency Virus) is
a type of virus that causes AIDS (Acquired
Immunodeficiency Syndrome)
AIDS is a disease that affects the
immune system

5. HIV is a virus that once in your blood,
hides in, multiplies in, then kills your
immune system cells (both white blood
cells and T-Cells)
HIV infecting and
multiplying in a healthy
cell.

6. The HIV virus hides and multiplies in T cells
The HIV virus hides and multiplies in T cells. The virus then kills both
T-Cells and White Blood cells

7. When the HIV virus kills enough T cells so
that there is less than 200 T-cells per
milliliter of blood, the disease is officially
called AIDS
Infected T-Cells

8. AIDS Acquired Immunodeficiency Syndrome
If enough of your white blood cells and T-cells are killed, you soon will be vulnerable to any infection or disease.
Because the immune system is weakened, a common cold or infection can be lethal

9. NO! NO! NO! NO! How is HIV transmitted? Is it transmitted?
Through the air
NO!
On toilet seats
NO!
By kissing
With a handshake
NO!
You can become infected if you receive HIV infected
white blood cells found in most body fluids.
The most common way of transmission is through
sexual contact, sharing of infected needles, or any
other blood to blood contact

19. HIV lab Materials Needed: 1 test tube per student
Phenolphthalein (HIV test)
sodium hydroxide solution (1 infected test tube)
Water (all test tubes)

20. Teacher Directions

22. What did you learn from HIV lab?
Discuss
What did you learn from HIV lab?

27. Ge help