1. Each part of the immune system
Assignment #1
Each part of the immune system

2. Assignment #1
Macrophages- are the cells known as the “eating cells.” Their jobs are to eat the dead blood cells and eat the enemies. They are like janitors and they clean up everything.
Help T-cells- this cell travels through the body. It directs the cells to go to battle in the immune system.

3. Assignment #1
B-Cells-these cells mature and grow to fullness in the bone.
Killer T-Cells- These cells are responsible for injecting the infected cells with enzymes. They also kill cancer cells.

4. Assignment #1
Suppressor T cells- they’re like traffic controllers because it stops or slows down the b and t-cells activities.
Lymph nodes- it is like a fighting arena. It is where b and t-cells wait for invaders to come and then go to war. Where the wars take place is called the lymph nodes.

5. Assignment #1
Thymus gland- this is a small gland located in the chest below the chest bone. It’s important because white blood cells pass through it and turn into t-lymphocytes.
Antibodies- they’re like spies they search for invaders. They neutralize the enemy and tag it for attack. They are like suction cups on an octopus.

6. Assignment #1
Memory T- Cells- they’re like a memory bank, they remember which infections have entered your immune system. If the same infection tries to enter the system for a second time it is viciously attacked and the invader is crushed very quickly.
Antigens- they’re like a trigger on a gun and it tells the immune system when to respond. It fires the immune system.

7. Immune System
The Immune System is a bodywide network of cells and organs that has evolved to defend the body against attacks by "foreign" invaders.

8. Immune System
The Immune system has three different types of parts like:
antibodies
macrophages
antigens
helper T-cell
B-cell
Suppressor Killer T-cell
Memory Cells

9. Definition ( cells)
B-Cell: B-cells complete maturation in bones. They are later found in Lymphnodes. They complete maturation in bones. They are later found in Lymphnodes.
T-Cells in thymus: The thymus is an organ that is found near the heart. "T" stands for thymus. The thymus is like a nursery or a school.

10. Definition (parts)
Antibodies: Antibodies are weapons or traps that attach to the invaders.
Macrophages: macrophages are the #1 alert to prevent invaders from entering bodies, roaming guard, garbage men (they call the helper T cell)
Helper T-Cell: The helper T-Cell is the most important of all white blood cells, it identifies invaders by reading the antigens and calling the B-Cells.

11. Definition
Suppressor T-Cell: Once the war is over and the body has won the Suppressor T Cell slows down or stops the activities of B-Cell and other T cells.
Memory T Cell: T and B cells, generated during the initial infection, stay behind and become memory cells. Memory cells stay on the lookout for future invaders. If the same invader tries to invade the body a second time, an overwhelming attack is mounted by these memory cells, and the new invasion is quickly crushed.

12. Here are the parts of Immune System

13. Vaccines
A vaccine is any substance used to prevent disease by weakening or killing the bacteria or virus in question.

14. Vaccines are made by weakening the virus or bacteria in question
Vaccines are made by weakening the virus or bacteria in question. They then cause asymptomatic infections, meaning that the person is infected with the virus without suffering the symptoms. This lets the body’s immune system make antibodies to fight off the virus. They remember it, so that if it enters the body again, it is recognized and can be fought off quickly and easily.

15. The same effect takes place when you get sick with a virus
The same effect takes place when you get sick with a virus. Once you recover, your body is able to recognize it, and will fight it off when it sees it again. In fact, it is possible for a natural asymptomatic infection to occur. A vaccine simply insures that will get only the immunity, not the symptoms. These vaccines are grown in laboratories by scientists and doctors.

16. There are three ways to make vaccines:
Weakening the virus or bacteria- This prevents the virus from reproducing as many times as it normally would. This gives you immunity in fairly few doses, because you actually get a weak form of the disease. On the other hand, it cannot be used for people who have weak immune systems, because they can get the full effects of the disease. An example of this method is the chickenpox vaccine.

17. Killing the virus or bacteria- This kills the virus so it has no effect, but still lets the immune system recognize it. This way is better for weaker immune systems, because there is no way for the person to get the disease. It takes more doses than the the previous method, because the virus isn’t as strong. An example of this method is the flu vaccine.

18. Using part of the virus or bacteria- This method uses only a piece of the virus in the vaccine, so it cannot reproduce, but the immune system can still become familiar with it. This type of vaccine works for people with weaker immune systems as well, but again, they need more doses. An example of this method is the Hepatitis B vaccine, where only the protein coating of the virus is used.