Exam 42: Immunology: Animal Defense Systems

After the DNA sequences of immunoglobulins are cut out, and before they are joined, the enzyme _______ often adds additional nucleotides to the free ends of these DNA sequences.

Soluble signal proteins called _______, released many cells, bind to and alter the behavior of their target cells.

Autoimmunity is

For every white blood cell in a given volume of human blood, there are about _______ red blood cells.

If someone comes into a clinic with allergies, the doctor will often recommend antihistamines. When a person takes antihistamines, he or she is trying to prevent

Harmful organisms and viruses that can cause disease are collectively known as _______.

Which of the following is not an autoimmune disease?

Inflammation occurs when _______ release _______.

Which of the following statements is true?

In immediate hypersensitivity, individuals exposed to an allergen produce too much of the immunoglobulin _______, which causes a rapid release of a large amount of _______, the chemical responsible for many allergic symptoms.

Which of the following statements about the humoral immune response is true?

Immunologists can breed mice that lack _______ in order to compare the immune response of normal mice to those that have no T cells.

Lymphocytes specific for certain antigens proliferate by a process known as

Also known as white blood cells, _______ are colorless and nucleated.

Which of the following is a type of defense provided by complement proteins?

Phagocytes

Which of the following is not a lymphoid tissue?

Inoculation with antigenic proteins in a form that does not cause disease is known as _______.

Cells adhering to the skin and the linings of organs, known as _______ cells, release the chemical signal _______ when damaged.

Hybridomas are used to produce _______ antibodies.