Like the whole process of the lymph fluid travelling through the nodes. I opened my old GCSE bio textbook for funsies and I’ve realised I have lost a few braincells over the years and cannot wrap my head around it. I don’t know what came over me to want to understand this so bad, I just do.
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B-lymphocytes are produced in bone marrow; T-lymphocytes are produced in the thymus. They develop from the same stem cells (pluripotent hemopoietic stem cells) that give rise to all blood cells, including red blood cells.
Most lymphocytes die very shortly after they’re made, but the ones that survive travel via blood into the secondary (peripheral) lynphoid organs (lymph nodes, spleen, and epithelial lymph tissues found in the GI tract, skin, and lungs).
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