Viruses can only be studied in detail using a(n)

electron microscope

Explanation:

Viruses are beings that do not have cells, they are made up of nucleic acid that can be DNA or RNA, surrounded by a protein envelope called capsid. They are about 0.1µm in diameter, with dimensions only observable by the electron microscope, as they are extremely small and need advanced technology to be viewed.

it enhances antibody production by t cells of the adaptive immune system.

hope i'm right

explanation:

i think its control and coordinate because im pretty sure thats what tissue does and the joints are what control movement and then your skeletal/ bones provides portection. hope that .