Antibodies Explained: How Tiny Proteins Defend You

Antibodies are Y-shaped proteins made by B-cells.
Each antibody fits one specific antigen like a lock and key.
They tag invaders so other immune cells can destroy them.
Antibodies can neutralize toxins and block virus entry.
The body can produce billions of unique antibody shapes.
After an infection, some B-cells keep making them for years.
Antibodies circulate in blood, tears, and saliva.
Blood tests often detect these proteins as signs of past infection.
Vaccines work largely by prompting antibody creation.
They’re microscopic but powerful defenders that never sleep.