The right answer is True
Reason:
AV nodal block (also known as "heart block"), occurs when conduction between the atria and the ventricles is impaired due to damage of the specialized conducting tissue.
Once infected cells have sensed an invading pathogen, they secrete molecules called cytokines and chemokines. Cytokines such as interferons are molecules that signal neighbouring cells and induce an antiviral state in them. These cells are then primed to resist an infection with the invading virus.
Answer:
A
Explanation:
A sprain is an torn ligament while a sprain is a stretched or torn muscle or tendon
250 mice in the untreated group, 240 mice remained healthy and behaved normally, and 10 mice died during the
research. The researchers want to publish that the drug caused weight loss in the one mouse.
The mouse's weight loss may or may not have been caused by the drug. The scientists' observations may not be
repeatable
