Our defense system is not millions of years old, but 700 million years old; Japanese scientists make a big claim about the immune system. We have received the blessing of fighting diseases from a 70 crore year old organism; New research by Japanese scientists shocked the world – ..

By Samira Vishwas On May 30, 2026

Whenever the weather changes or a new virus attacks our body, our immune system becomes active like an impenetrable shield. Till now the world of science and we have believed that our complex security system is the result of the gradual development of our ancestors like humans and monkeys over millions of years. But a new and revolutionary research from Kyoto University of Japan has completely changed this old belief.

Scientists claim that we have inherited this amazing power to fight dangerous diseases, bacteria and viruses, not from any human ancestor, but from a very early, single-celled organism that lived on Earth about 700 million years ago.

How did this unique scientific revelation happen?

Researchers at Kyoto University resorted to a very modern genetic technique to solve this mystery. Through this he obtained cells from animals of many different species. ‘Gene Expression’ Matched. You can consider gene expression as a unique fingerprint of any living cell, which provides accurate information about what the cell does and what is its history.

In this study, scientists for the first time compared the blood of modern animals with those of primitive single-celled organisms that lived alone in the Earth’s oceans millions of years ago and in which life was just beginning.

Macrophage cells: our body’s oldest soldier

The most interesting and surprising link in this research is present in our blood. Macrophage Cells Came out as. Macrophages are the frontline defenders of our body, which surround and directly swallow any harmful bacteria or waste coming from outside and keep the body safe from infection.

Shared history and FOS genes:

Research has found that that single-celled primitive organism of 700 million years ago also worked in exactly the same way – it would surround and swallow any foreign object or its own food in the same manner. Scientists have to decide between these two ‘FOS’ A common gene named has been found. This particular gene is still active in our blood today and was fully present in that early organism millions of years ago.

The ‘family tree’ of our blood cells

This study has presented to the world a very clear and clear evolutionary map of the development of the blood and its cells flowing within our body, which developed as follows:

Macrophages: It is the first and original cell directly related to the ancient organism.
Mast Cells: The gradual development of macrophages later led to the birth of mast cells.
T-Cells and Red Blood Cells (RBC): After this, our T-cells (which fight viruses) and red blood cells (RBCs) evolved from mast cells.
B-Cells: At the same time, B-cells separated directly from macrophages and emerged as an independent protective cell.

In simple words, the T-cells and B-cells that protect us day and night from the most serious diseases are actually the descendants of the same ancient cell that millions of years ago knew only how to feed itself.

Will help in treating serious diseases like blood cancer

This historical research is not limited only to knowing our past and history, but its significance is very big in the world of medical science. Head of Research Team hiroshi kawamoto According to, with the help of this new technology and genetic mapping Leukemia (Blood Cancer) A new direction will be found in deeply understanding such deadly diseases.

During blood cancer, the path by which our body’s cells deviate and start growing uncontrollably is actually the same ancient biological path that scientists have now discovered. With this basic understanding, more accurate, safe and effective cancer treatments can be developed in the future.