Answer:
<h2>False</h2>
Explanation:
Natural killer cells (NK cells) are a type of lymphocyte and also a component of innate immune system. NK cells play various functions in immune system and they play a major role in the host-rejection in virally infected cells.
NK cells are activated in response to interferons and also by various other responses. NK cells work to by secreting IFNγ and TNFα. Natural killer cells play a very important role in early host defense against viruses.
He found a nuclear structure (cells) in plants by looking through a microscope
Answer:
Hormones, Cell receptor and glands
Answer: (Smallest = left) (Largest = right)
Individual = community = population = biome = biosphere = ecosystem
