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。

A fifth type of B cell lymphoma is marginal zone lymphoma, and it's an indolent lymphoma.

第五类B细胞淋巴瘤是边缘区淋巴瘤，是一种惰性淋巴瘤。

A sixth type of B cell lymphoma is lymphoplasmacytic lymphoma, and this one's also an indolent lymphoma.

第六类B细胞淋巴瘤：淋巴浆细胞性淋巴瘤，也是一种惰性淋巴瘤。