Those B-cells also mature, they differentiate and that's what's shown on this slide here is the differentiation of those immature B-cells into mature B-cells.

这些B细胞也会变成熟,并且进行分化,这都展示在幻灯片上了,未成熟的B细胞分化为成熟的B细胞

耶鲁公开课 - 生物医学工程探索课程节选

That's shown here, a B-cell gets stimulated, matures into an antibody producing factory.

这里展示的是,当一个B细胞被激活,分化成熟为一个生成抗体的工厂

耶鲁公开课 - 生物医学工程探索课程节选