It can lead to a lack of energy, weakened immune systems and delayed periods.
Or do they have unusually strong immune systems that just need a slight nudge?
That's important at a time when their own immune systems haven't kicked in yet.
Antigens stick out from cells like molecular signposts, saying kick me to the immune systems soldiers.
Some researchers worried an mTOR drug would suppress patients' immune systems, as Rapamune does by design.
Unfortunately, these organs, unlike the company's skin-based products, would be rejected by patient's immune systems.
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Horses' immune systems decline after 10 hours of transportation making them more susceptible to disease.
People at risk include infants, pregnant women, adults with weakened immune systems and older adults.
Doctors, however, have attributed the fact to the healthier immune systems the drugs promote.
Elderly people, kids, and those with compromised immune systems are at particular risk with the flu.
In the elderly, the elderly are more susceptible, and young children are susceptible because their immune systems aren't developed.
It said new mums are at risk of catching the virus because their immune systems are low.
The unit is for leukaemia or lymphoma adult patients whose immune systems have been depleted by chemotherapy.
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Connections are a fundamental condition of being human--from our neural and immune systems to families and friendships.
Because of the children's delicate immune systems, they are required to sanitize their hands throughout the day.
At risk groups include the over-65s, pregnant women, people with weakened immune systems and other health conditions.
Some experienced serious side effects, including three people who died likely because their immune systems attacked healthy tissue.
One theory is that as some children's immune systems mature, becoming more adult, the allergic response goes away.
Some people may have suppressed immune systems (the elderly, the pregnant), others may just be weird about colds.
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However, it can cause serious harm to vulnerable hospital patients with weakened immune systems, such as premature babies.
Another possibility is that children are being exposed to fewer germs, affecting the development of their immune systems.
The illness can be more serious in people with weak immune systems such as the elderly or very young.
This is a condition that occurs in hospitals where patients get infections that rapidly shut down their immune systems.
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Finally, the flu shot does not always work -- particularly among the elderly and people with weak immune systems.
This parasite weakens the immune systems of bees, making the consequences of an infection more likely to be fatal.
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Was there any benefit to deferring giving the MMR vaccine to children until their immune systems were better developed?
That means when they come into contact with an allergen, the immune systems do not destroy it as they should.
Genetic differences in people's immune systems may also explain why some people respond much better to antibody drugs than others.
If their immune systems respond and the vaccine appears safe, Mexican regulators would be likely to approve it, Singhvi says.
Suppressing the immune systems of women who suffer recurrent miscarriage may be able to allow many more to give birth.
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