A ________ is a mass of cells whose growth is uncontrolled and that serves no useful function in the body.
Fill in the blank with the appropriate word.
Question 2
The most common cause of encephalitis is
a. a virus transmitted by mosquitoes.
b. a bacterium transmitted by sexual intercourse
c. a virus found in bird droppings.
d. a virus found in untreated drinking water.
e. consumption of spoiled meat.