ACTA2 and escherichia coli infection: However, under the condition of E. coli infection, ACTA2 and procollagen 1 (proCOL1) co-expressing cells are rare in the mouse and canine prostate (Ruetten et al., 2021), prompting us to test whether proCOL1 and ACTA2 co-expressing cells are also rare in histologically inflamed human prostate.