What are they? 🤔

• Cells in the adaptive immune system, the body's sophisticated defense team.
• Roughly 1/4th (25%) of our white blood cells.

What do they look like? 🧐

• Picture a cell with a big, round nucleus (like the yolk of a sunny side up egg!)
• Just a tiny bit of cytoplasm around the nucleus.

Where do they hang out? 🏠

• Mostly in the blood, but also in the lymphatic system.
• Fun Fact! They're called 'lymphocytes' because of their presence in the lymphatic system.

• A series of vessels that help drain extra fluid from our body tissues.

• Think of them as rest stops along the lymphatic highway.
• They’re swollen structures along lymph vessels.
• Super-popular hangout spot for lymphocytes!

• Large proteins made by lymphocytes.
• Their main goal: Destroy the baddie pathogens!

• Two main parts
  • Hypervariable region: Like a lock-picking set, it recognizes and binds to specific molecules on a pathogen.
  • Another region: Assists the body in combat. How? Two ways
    • Flags down phagocytes by making the pathogen stand out, like a neon sign.
    • Acts as a bouncer, preventing viruses from entering host cells.