When Pavlov put food powder in the dog's mouth and saliva was generated, that's an unconditioned stimulus giving rise to an unconditioned response.
巴甫洛夫给狗喂食,狗会分泌唾液,这就是无条件刺激引起了无条件反应。
use the whole body, hormones release, and then your body respond and get stronger.
用全身,分泌激素,然后你的身体会做出反应,会变得强壮。
The memory cells, which are stimulated, lead to an IgG response and that's why IgG is the antibody of-- that is produced predominantly after the boost, but there is some IgM produced also.
记忆细胞受到刺激之后,可以诱发分泌IgG的应答反应,这也是为什么IgG,是接种疫苗后产生的主要抗体,与此同时也刺激产生了一些IgM
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