Another name for helper T cells is CD4+ (now options are correct), it is due to the presence of specific cell surface receptors.
<h3>What are T cells?</h3>
T cells are also called CD4- + positive cells have essential functions in the immune system by triggering adaptive immune responses.
These cells CD4- + positive cells contain specific cell surface receptors that can be identified by biochemical analyses.
In conclusion, another name for helper T cells is CD4+ (now options are correct), it is due to the presence of specific cell surface receptors.
Learn more about T cells or CD4+ cells here:
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Answer:
But that is not the answer
Explanation:
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The answer is the quadricep muscles. They are engaged whe you use the leg extension machine.
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Items that belong to the five food groups in the USDA's MyPlate Food Guidance System are:
Veggies
Fruits
Dairy
Protein
Grains
so any one of them could be considered as one of the five food groups
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