There's a lag period where if I was just looking for antibodies nothing happens for a while.

这中间存在一段迟滞期,如果只过一会就进行观察,抗体的数量不会发生变化

耶鲁公开课 - 生物医学工程探索课程节选

One thing that happened was that after 1956, 1957 the number of cases were down, there was a small bump here, the cases were up.

一九五六年后发生了一件事,在一九五七年,病例的数量有所下降,但在这里却有一个很小的上扬,病例数量上升了

耶鲁公开课 - 生物医学工程探索课程节选

This was of great concern because the number of polio cases shouldn't go up as the vaccine is being even more actively distributed through the country, so what happened?

这个现象让人担心,因为小儿麻痹症的发生数量,不应该在疫苗全国范围内普及后,反而有所上升,那么到底发生了什么

耶鲁公开课 - 生物医学工程探索课程节选

They both proliferate, increase in number, and they differentiate; they differentiate from immature B-cells into antibody producing cells.

淋巴细胞将迅速增殖,数量大幅提高,同时发生分化,幼B淋巴细胞分化,形成能够分泌抗体的细胞

耶鲁公开课 - 生物医学工程探索课程节选