@thecellbrief: This calf has a gland you have too. And yours is shrinking. 🐄 It's the thymus, a small gland behind your breastbone. It's a training camp for your immune T cells. And the T stands for thymus. 😮 Young T cells learn there to spot germs and leave your own cells alone. After puberty, it slowly shrinks. In 1977, scientists found a tiny peptide in calf thymus, just 28 amino acids long. 🧬 In a lab dish, it switched on the immune system's scout cells. Did you know the T in T cell stands for thymus? 👇 Education only. Not medical advice. #Science #biology #thymus #ScienceExplained #learnontiktok

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Monday 02 November 2026 01:02:30 GMT