Answer:
killer T
Explanation:
helper T activates killer T cells which literally kill the virus or bacteria. memory T are the subset of an infection.
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If they did not communicate then there wouldn't be a logical explanation for the experiment ..
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If one parent is heterozygous (Ss) and the other is homozygous recessive (ss). Mark me brainliest plz!
It is A both chemical changes and flow of energy
