T cells. When HIV arrives in the lymph nodes – around 24 to 48 hours after exposure – they activate other immune cells, such as CD4 t-cells, HIV's primary target.
Answer:
By exercising, it increases blood flow towards the muscles and digestive tract. This can help move food through the stomach, or digestive tract.
This is called asexual reproduction.
<em><u>The MC1R gene provides instructions for making a protein called the melanocortin 1 receptor. </u></em>
Explanation:
MC1R’s function-This receptor plays an important role in normal pigmentation. The receptor is primarily located on the surface of melanocytes, which are specialized cells that produce a pigment called melanin.
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Answer:
they can naturally interbreed to produce a fertile offspring