the.com/lymphocytes
The immune system's white-collar workforce: tiny, specialized, and very good at holding grudges.
means A class of white blood cells that recognize, attack, and remember specific pathogens to defend the body.
from From Latin lympha (clear water) plus Greek kytos (cell) — named for the clear lymphatic fluid where they patrol.
Three flavorsB cells, T cells, and natural killer cells.
Memory keepersSome live decades, remembering pathogens for life.
Vaccine targetsShots train them without the actual disease.
Daily outputBone marrow makes billions every single day.