NK cells are activated by…….
a) lymphokines
b) interferons
c) macrophages
d) none of these
Interferon alpha is produced mainly by…
a) WBCs
b) fibroblasts
c) activated T cells
d) both a and b
Interferon beta is produced mainly by…
a) WBCs
b) fibroblasts
c) activated T cells
d) both a and b
Interferon gamma is produced mainly by
a) WBCs
b) activated T cells
c) fibroblasts
d) all of these
The inflammatory response (inflammation) occurs when tissues are injured by…
a) bacteria
b) trauma and heat
c) toxins
d) all of these
The damaged inflammatory tissues by bacteria, trauma, heat or toxins release which of the following chemical/s?
a) histamine
b) bradykinin
c) serotonin
d) all of these
Explanation: these chemical cause blood vessels to leak fluid into the tissues causing swelling
