A 25-year-old male presents with recurrent respiratory infections. Which immune component is most likely deficient?

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Q: A 25-year-old male presents with recurrent respiratory infections. Which immune component is most likely deficient?

Solution: Recurrent respiratory infections are often associated with B cell deficiencies, leading to inadequate antibody production.

Steps: 5

Step 1: Understand that recurrent respiratory infections mean the person gets sick often, especially with lung or breathing problems.
Step 2: Know that the immune system has different parts that help fight infections, including B cells.
Step 3: Recognize that B cells are responsible for making antibodies, which are proteins that help fight off infections.
Step 4: Realize that if someone has a problem with their B cells, they may not produce enough antibodies.
Step 5: Conclude that the most likely deficiency in this case is related to B cells, leading to inadequate antibody production.