Questions about example sentences with, and the definition and usage of "Tfh"

A: × Tfh cells, as an important subset of CD4+ T cells, playing an essential role in germinal centre formation, B cells differentiation and IgG4 class-switching, were pivotal cells in the process of this disease.
✓ Tfh cells, an important subset of CD4+ T cells, play an essential role in germinal centre formation, B cells differentiation, and IgG4 class-switching, and therefore they are pivotal cells in the process of this disease.

× IL-10, a representative anti-inflammatory cytokine, mainly secreted by Treg cells and plays an important role in maintaining immune homeostasis, was also mildly elevated and positively correlated with IL-4, TNF-α, and IFN-γ, but uncorrelated with Treg cells.
✓ IL-10 is a representative anti-inflammatory cytokine mainly secreted by Treg cells, which plays an important role in maintaining immune homeostasis. IL-10 is also mildly elevated and positively correlated with IL-4, TNF-α, and IFN-γ, but uncorrelated with Treg cells.

× Thus, our patient population had a tendency to be with multi-organ manifestations.
✓ Thus, our patient population had a tendency to have multi-organ manifestations.