new_n_lost
Politically InCorrect
Topics: 654
Posts: 6,119
|
Antigenic variation is a mechanism of immune evasion that results in
A) Interference with attachment to host receptors.
B) Induction of immune suppression.
C) Alterations in important surface antigens such that escape variants arise as a result of immune selection.
D) Mutations in surface antigens.
E) Destruction of antigens by proteolytic enzymes
___________________
FORUM RULES-- Those who believe in telekinesis, raise my hand. I get enough exercise just by pushing my luck --P4U World.." The pure and simple truth is rarely pure and never simple."
|
| drduck
Forum Guru
Topics: 82
Posts: 529
|
C ????
|
| tompat
Forum Elite
Topics: 38
Posts: 339
|
c
|
| new_n_lost
Politically InCorrect
Topics: 654
Posts: 6,119
|
___________________
FORUM RULES-- Those who believe in telekinesis, raise my hand. I get enough exercise just by pushing my luck --P4U World.." The pure and simple truth is rarely pure and never simple."
|
| new_n_lost
Politically InCorrect
Topics: 654
Posts: 6,119
|
C
Antigenic variation is common to many pathogens and is a mechanism by which they are able to escape the immune system. Antigenic variation can be the result of various mechanisms including mutation, changes in surface protein expression, and natural variation among strains such as occurs in the pneumococci. The potential of a microorganism for antigenic variation is a major consideration in vaccine design.
___________________
FORUM RULES-- Those who believe in telekinesis, raise my hand. I get enough exercise just by pushing my luck --P4U World.." The pure and simple truth is rarely pure and never simple."
|
|
| |
| | | | | |
