Regulation of macrophage number and gene transcript levels by activin A and its binding protein, follistatin, in the testes of adult mice

The cytokine activin A is expressed throughout testicular development and is a critical regulator of macrophage function, but its effects on the testicular macrophages are not well-defined. Macrophage distribution and gene transcript levels were examined in testes of adult mice with reduced levels of either activin A (Inhba