CD4 and metabolic dysfunction-associated steatohepatitis: Macrophage infiltration was also increased in the NASH-FMT group, indicating aggravated liver inflammation.18 Compared with the NASH-FMT group, B. uniformis and B. bifidum transplantation resulted in an increased number of hepatic CD4+T cells and NK cells, and a decreased number of macrophages (Figure 5b).