A second type of B cell lymphoma is a follicular lymphoma, and it's an indolent lymphoma.

第二类B细胞淋巴瘤是滤泡性淋巴瘤，是一种惰性淋巴瘤。

One known mechanism for how a follicular lymphoma develops, is a chromosomal translocation between chromosome 14 and chromosome 18.

一种已知的滤泡性淋巴瘤发生机制，是14号染色体和18号染色体之间的染色体易位。