Proteins who activate the immune system, fight viruses by slowing or stopping their multiplication, and signal other cells to increase their defenses are known
a. synthetic immunoglobulins
b. interferons
c. t cells
d. immunoglobulins

Which is one purpose of creating federal laws and policies for tobacco use? to people stop using tobacco products to implement health events aimed at fighting tobacco use to monitor the trends in tobacco use across demographics to reduce the amount of money spent on tobacco products