During an infection, neutrophils are among the body’s first responders. They rush toward threats, attack invading microbes and can trigger inflammation. But during early pregnancy, some of these same immune cells appear to take on a very different job: helping the placenta establish itself. A new study has found that …
We often think of the gut microbiome as a community of microscopic organisms that quietly helps digest food and produces useful molecules. But scientists have now uncovered a much more direct form of communication: some gut bacteria can physically inject proteins into human cells. The discovery suggests that certain microbes …
A drug designed to remove one type of immune cell may be changing another and that could help explain why it works for some kidney patients but not others. Researchers at Nagoya University have found that rituximab, a drug that removes B cells from the blood, can trigger major changes …
Sleep is often treated as something we can sacrifice when life gets busy. A late-night study session, an early workday, or hours of scrolling can easily reduce our sleep without seeming immediately harmful. But sleep is not simply a period when the body switches off. It is an active biological …
Aging is associated with a higher prevalence of autoantibodies and autoimmune conditions. As people age, immune tolerance may become less effective because of changes in T-cell and B-cell function, thymic involution, and reduced regulatory T-cell activity. These changes can contribute to the production of autoantibodies such as antinuclear antibodies (ANA), …
Your immune system is constantly moving. Its cells squeeze through tissues, attach to surfaces and push against their surroundings. But could these cells actually tell when something is physically touching them? Scientists have now found evidence that they can. This reveals that immune cells do more than respond to chemical …
A new study shows how dangerous strains of Klebsiella pneumoniae quietly disable the immune system’s cleanup crew and how an existing cancer drug might undo the damage. Klebsiella pneumoniae isn’t a household name, but doctors fear it. This bacterium causes pneumonia, blood infections, and organ abscesses, and in India, up …
For decades, scientists viewed the brain as being unusually isolated from the immune system. The blood–brain barrier seemed to protect it from many circulating immune cells, leading to the idea that the central nervous system was largely “immune privileged.” But research over the past few years has revealed that the …
This sounds impossible. Our blood groups are one of the first things doctors need to consider before a transfusion because giving incompatible blood can trigger a dangerous immune reaction. In simple terms, blood is not a one-size-fits-all fluid. It is more like a carefully coded key, and the wrong key …
Inflammation is usually something we notice. A cut becomes red and swollen, a sore throat hurts, or an injury becomes painful. These are signs that the immune system is actively responding to damage or infection. But there is another kind of inflammation that can be much harder to detect, low-grade …
A severe COVID-19 infection may do more than damage the lungs and trigger inflammation. It may also disturb the body’s control over viruses that have remained hidden inside cells for years. A study involving more than 1,000 people hospitalised with COVID-19 found that nearly half showed signs of reactivation of …
When it comes to fighting off nasty intruders like cancer or viruses, our bodies have a built-in surveillance system that works 24/7. Think of your immune system like a high-tech security team; their job is to sniff out trouble, identify the bad guys, and neutralize the threat. But what if …
Imagine being told that only a handful of people in your country share the same blood type as you. If you ever needed a blood transfusion, finding a matching donor could become a race against time. In such moments, every minute can feel like a ticking clock, and every compatible …
Deep inside the dark, hollow centres of your bones lies a microscopic metropolis. This is your bone marrow, a high-tech factory working 24/7 to pump out trillions of fresh, energetic blood cells that keep you alive. In this bustling city, the real heroes are the structural “maintenance workers” known to …
From a simple pregnancy test to sophisticated laboratory analysers, immunoassays have become an important part of how modern medicine detects and monitors disease. They may look like ordinary tests, but behind the small strip or laboratory machine lies a highly organised biological detection system. In many ways, an immunoassay works …
Have you ever watched a movie or web series and later felt as if it had stepped out of the screen into real life? That was my experience with The Last Ship. Years before the world heard the word COVID-19, this Hollywood series painted a frightening picture of a deadly …
“A scar is not a sign of weakness, it is proof that healing chose hope.” A small cut on your finger may look like a simple accident, but inside your body, it is treated like a city facing an unexpected attack. The moment the skin breaks, millions of tiny workers …
Have you ever eaten a peanut, cuddled a pet, or walked through a flower garden, only to start sneezing, scratching, or breaking out in red itchy patches? It can feel as if your body has suddenly declared war on something completely harmless. But how do doctors identify the real troublemaker …
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