Researchers at the University of Virginia School of Medicine have identified a specific enzyme inside immune cells that keeps Toxoplasma gondii, one of the most common brain parasites on the planet, ...

During the recent Covid-19 pandemic, the rate of serious illness and death was jarringly high in older populations. Why? Weakening immune systems — as we age, we become more vulnerable to infections, ...

Why can the human immune system often remember a vaccination for a whole lifetime? Researchers at ...

Your immune system could weigh 1 to 1.2 kilograms and contain 1.8 trillion cells. “The immune system is a complex system comprising many different cell types with essential functions,” says Ron Milo ...

The idea of turning back the clock on the immune system has moved from science fiction to a concrete experimental strategy. A cluster of new studies suggests it may be possible to restore some of the ...

Aptamers are short, single-stranded nucleic acids that can fold into specific three-dimensional structures, allowing them to bind target molecules with high ...

A person’s menstrual cycle may affect their immune system’s response, causing fluctuations throughout the month. The menstrual cycle involves a series of changes in hormone levels and structures ...

Your immune system may be weak if you have frequent, severe, or extended infections. Learn more signs of a weak immune system.