Humoral immunity is immunity from serum antibodies produced by plasma cells. More specifically, someone who has never been exposed to a specific disease can gain humoral immunity through administration of antibodies from someone who has been exposed, and survived the same disease.
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One study found that self-esteem had differing effects on sexual behaviors in teen boys and girls: Younger girls with lower self-esteem are more likely to engage in sexual activity. ... Boys who have high self-esteem are nearly 2.5 times more likely to initiate sex
