How Did Immunology Go from ‘Superstition’ to Science?
July 24, 2026Core Framework & Diagram How Were Antibodies Discovered?
July 24, 2026
How Were Antibodies Discovered?
A mysterious protective substance in blood, pursued by generations of scientists for a hundred years — finally unmasked
By the Editors 1-min read
In your blood there is a protein that specifically records every pathogen you have ever encountered, and when those pathogens appear again, it can mark them as attack targets with astonishing precision.
This protein is called an antibody.
Today, antibodies are one of the most widely applied biomolecules in modern medicine — from COVID test strips to cancer targeted therapy, to biologics for autoimmune disease, to vaccine efficacy evaluation, antibodies are everywhere.
But how were they discovered?
This story starts with a guinea pig terrified by diphtheria toxin, passes through a German scientist who liked the 'magic bullet' analogy, and ends with a three-dimensional structure accurate to every atom precisely resolved in 1972. The discovery of antibodies is one of immunology's most worth-savoring stories.
KEY TAKEAWAYS
01
In 1890, von Behring and Kitasato discovered 'antitoxins in serum' — the origin of antibody science. Serum therapy was born from this; von Behring received the 1901 first Nobel in Medicine. Kitasato's exclusion from the Nobel is one of history's regrets.
02
Ehrlich's 'Side-Chain Theory' (1897) was mostly wrong in detail but contained the core correct intuition of 'specific recognition,' plus the 'magic bullet' concept that influenced targeted therapy philosophy a hundred years later.
03
Landsteiner proved antibodies can recognize artificially synthesized small molecules (haptens), revealing that immune recognition capacity is nearly unlimited — precisely the biological foundation enabling today's design of therapeutic antibodies targeting any protein.
04
Porter + Edelman jointly resolved the Y-shaped antibody structure (Fab/Fc, heavy/light chains), winning the 1972 Nobel Prize — knowing the structure enabled understanding function, which enabled beginning to artificially design antibodies.
05
In 1975, Köhler and Milstein invented monoclonal antibodies (hybridoma technology) and deliberately chose not to patent, letting the technology rapidly globalize, founding the modern biologics industry — today over half of all biologics are monoclonal antibody-based.
06
Antibody discovery was an 85-year relay race — each generation of scientists stood on the previous generation's shoulders and took one more step. Science is exactly this: not a truth suddenly discovered one day, but the confluence of generation after generation of curiosity.
Art 155
The Discovery of T Cells and B Cells
→
Art 156
The Accidental Discovery of NK Cells
→
