The guts of the mice were DNA sequenced and it was found six bacterial species present in the mice with the immune cells but absent from the mice without them.
对小白鼠的胆固醇进行 DNA 测序，发现有 6 种细菌种群存在于具有免疫细胞的小鼠体内，但没有免疫细胞的小白鼠体内则没有。