21. The Immune System
Cell Communication: Cytokines
Multiple Choice
Multiple ChoiceThe "voices" of a cell, which carry messages, are:
A
Surface receptors.
B
Platelets.
C
Cytokines.
D
Antigens.
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The "voices" of a cell, which carry messages, are:
Surface receptors.
Platelets.
Cytokines.
Antigens.