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Their study of 12,000 genes involved in immunity showed that both males and females have similar immune systems when young. But, during puberty, changes occur. The researchers explained that our immune system is made the liar's club: a memoir up of two branches - innate and adaptive immunity. Adaptive immunity, which is the more complex of the two, involves the production of antibodies which play a vital role in warding off infections. Analysis of the adult mice showed that this part the liar's club: a memoir of the immune system was weaker in males. This left them more prone to illnesses caused by bacteria, viruses and fungi. At the the liar's club: a memoir same time, the higher level of adaptive immunity in the females could make them more vulnerable to autoimmune conditions such as multiple sclerosis. These illnesses involve the body being attacked by antibodies produced by its own immune system. Further experiments showed that the change in the immune system at puberty is driven by the female sex hormone oestrogen.
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