Besides helper T cells, what are two other types of cells that HIV infects?
1. macrophages and brain cells
2. B cells and liver cells
3. plasma cells and neutrophils
4. cytotoxic T cells and brain cells

When searching for a donor for an organ transplant, doctors try to match the __________ of the donor and recipient as closely as possible.

In a series of immune system experiments, the thymus glands were removed from baby mice. Which of the following would you predict as a likely result?

The antigen-binding sites of an antibody molecule are formed from the molecule's variable regions. Why are these regions described as variable?

Chemicals produced by virus-infected cells that alert neighboring cells to prepare a defense are called:

The earlier concept of Health was

1. A state of body and mind

2. Where there was a balance of certain humor

3. A state of mind, body, and heart

4. More than one option

The assertion by Hippocrates about health was

1.    Same as that of Indian Ayurveda system

2.    Different from Indian Ayurveda System

3.   Supported by some other early Greeks

4.   More than one option

The person with Black bile were considered to be

1.    Belonged to black pigmentation group

2.    Belonged to hot personality

3.   Belonged to hot personality having fevers

4.   Belonged to black pigmentation will be prone to fever

The good humor hypothesis of health was disproved by

1.    The discovery of blood circulation by William Harvey using experimental methods

2.    Demonstration of normal body temperature in people with black bile using a thermometer

3.   Both 1 and 2

4.   Observing vector born disease

What is the present concept of health?

1.    Mind influences directly our immune system

2.    Mind influences our immune system by means of the neural system

3.   Mind influences our immune system by means of the endocrine system which controls health.

4.   Mind influences our immune system by means of the neural and endocrine system which controls health.