@biowithrafa: Your immune system has a whole army dedicated to making antibodies, and B cells are the commanders. Here’s how they work, from birth to memory: 🧬 B Cell Basics • Made in your bone marrow • 20% of your blood’s fighter cells • Have “detectors” (BCRs) to spot germs • Release antibodies into the blood—they don’t move to infections 🔁 How They Grow Up • Start as stem cells in bone marrow niches • Go through “boot camp” in the spleen → tested so they don’t attack your own body • Mature into: – Follicular B cells (patrol lymph nodes) – Marginal Zone B cells (guard the spleen) ⚡ Plasma Cells = Antibody Factories Once activated, B cells transform into plasma cells: • Pump out thousands of antibodies per second • Short-lived but powerful 💾 Memory B Cells = Immune Memory • Created after an infection or vaccine • Live for years • Recognize the same germ faster and stronger next time → long-term immunity B cells don’t fight directly—they strategize, produce antibodies, and remember past threats so you’re protected for the long run. i used kilonotes for note taking. #kilonotes #Immunology #Antibodies #kilonotesfan #biology

📚🔬Biowithrafa 🧬🧫

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Saturday 31 January 2026 18:09:58 GMT