It’s b because its shown in the question read it again ,and you’ll see
Answer:
secrete a cytokine that triggers apoptosis
Explanation:
Cytotoxic T cells secrete granzymes and perforins when targeting cells. Additionally they secrete cytokines such as IFN-, TNF-α and TNF-β that act to activate macrophages and help kill infected cells.
Answer:
1. flame color (i think)
2. carbon dioxide is a reactant
The first cells were identified in a cork bark.
