But the B lymphocyte system is not terribly effective at these tasks when it comes to chlamydiae, which live inside the cells, where circulating antibodies cannot reach them.

• 但是，当B淋巴球系统遇到存身于细胞内的披衣菌时，就不是那麽有效了，因为血液中的抗体无法接触到菌体。