Test 2 Qs 13-24

Question 1

Cloning selection:

Answer 1

Results in proliferation of lymphocytes and may result in apoptosis

Question 2

Double positive T cells are positive for both?

Answer 2

CD4 and CD8

Question 3

After making a hypotonic solution, what is the concentration of the hypertonic solution?

Answer 3

2,7%

Question 4

If markers on white blood cells are detected, what methods can we use?

Answer 4

Magnetic bead separation and FACS

Question 5

Exogenous antigen is processed?

Answer 5

After being presented by antigen presenting cell

Question 6

IL-4 produced by Th2 does what?

Answer 6

Activate B lymphocyte

Question 7

What is test for hypersensitivity Type 1?

Answer 7

Western blotting

Question 8

Passive immunisation is useful when you you want _________ Response.

Answer 8

Faster

Question 9

Complement fixation test, the complement :

Answer 9

Lyses sensitised erythrocytes that are added to the solution if primary antibody dosenˋt bind to the antigen.

Question 10

Passive immunisation to bacterial toxin would be recommended if:

Answer 10

Exposure to the toxin had already occurres in an unimmunised person.

Question 11

Adhesion molecule do NOT do?

a. Attract the leukocytes to the site of innflammation
b. Signal leukocytes to migrate through the endothelial wall
c. Result in diapedesis
d. Play a role in leukocyte phagocytosis

Answer 11

d. Play a role in leukocyte phagocytosis

Question 12

Somatic hypermutation is?

Answer 12

A programmed process of mutation affecting the variable regions of immunoglobulin genes.