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immunity

This image may not be used in educational posters ^BCell-mediated immune response,^b computer artwork. This type of immune response is most often used against intracellular pathogens, such as viruses. The viruses (gold) are phagocytosed (engulfed) by macrophage cells (green), a type of white blood cell. Fragments of viral protein (antigen) are displayed on the macrophage's surface. The antigen is recognised by a helper T lymphocyte (purple, centre and right), which secretes chemicals to activate other immune cells, including cytotoxic T lymphocytes (purple, left and bottom). The cytotoxic cells release chemicals that cause the macrophages to disintegrate and die, killing the viruses inside as well.

Health

How to tell if your immune system is weak or strong

New blood tests can reveal whether your immune system is fighting fit by looking at the balance of different immune cells, but there may be a simpler way of gauging your immune health

Features

MANILA, PHILIPPINES - AUGUST 19: Commuters are seen wearing face masks and face shields inside a bus on August 19, 2020 in Quezon city, Metro Manila, Philippines. President Rodrigo Duterte relaxed quarantine measures in the Philippine capital in a bid to boost the country's tanking economy despite having the most coronavirus cases in Southeast Asia. The Philippines' health ministry has so far confirmed 173,774 cases of the coronavirus, a third of which were recorded in the last two weeks. (Photo by Ezra Acayan/Getty Images)

Health

The sex differences that impact the strength of your immune system

Features

New York, New York - March 14, 2020: The movement and travel restrictions instituted in NYC are having significant economic impacts. A sign at a GNC reads

Health

Why do some people appear to have a naturally strong immune system?

Features

Children may be more susceptible to seasonal infections like the respiratory syncytial virus (RSV) this winter compared with in pre-pandemic years

Health

Do we have 'immunity debt' and how could it affect our infection risk?

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A person cycles in Reykjavik, Iceland, on 3 September 2020

Health

Iceland targets herd immunity with controversial covid-19 strategy

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Philipp Dettmer, CEO and Founder of Kurzgesagt

Health

Kurzgesagt CEO Philipp Dettmer: 'Everything can be made into a story'

Culture

Is it time for the UK to vaccinate children against covid-19?

Health

Is it time for the UK to vaccinate children against covid-19?

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Engineered immunity: Redesigning antibodies to better fight disease

Health

Engineered immunity: Redesigning antibodies to better fight disease

Features

We'll soon be able to tell whether you are immune to covid-19

Health

We'll soon be able to tell whether you are immune to covid-19

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