Helper T cells become activated by interacting with antigen presenting cells. and the second blank space is either cytotoxic t cells or B cells
Your answer should be “D”.
i hope i could help!
When a gene mutation occurs, the nucleotides are in the wrong order which means the coded instructions are wrong and faulty proteins are made or control switches are changed. The body can't function as it should. Mutations can be inherited from one or both parents. They are present in the egg and/ or sperm cells.
Answer:
2.939e+12 Basically 2.93 miles
Explanation:
If one light year equals 5.879e+12
then (.5) half of a light year equals 2.939e+12
Answer: Proteins
Explanation:
Proteins are known to be the most antigenic. Antigenicity describes the ability of the foreign materials to bind or interact with B-cell receptors or T-cell receptors.
The T-cell receptor recognizes the linear amino acid chain or sequence which is known as epitope.
They are usually long chains or amino acids or proteins. Some times polysaccharides can also show antigenicity. But they have less antigenicity.