Difference between T4 cells and T4 hormone?

Question

Whats the difference between T4 cells (usually attacked by HIV) and T4 hormone produced by thyroid, or is it the same? thanks

Answer 1

T4 cells are a subset of the T lymphocytes, which is a class of lymphocytes that are involved in the immune system for developing antibodies to fight an infection. T4 is thyroxine which is produced by the thyroid gland. There are a couple of hormones that the thyroid gland produces, T3 which is Triiodothyronine, and T4. T3 and T4 are a short hand nomenclature for naming these hormones and have nothing to do with T4 cells.