Fig. 5.

Immunostaining of PELP1 and MMP-9 in ERα-positive breast cancer tissues. a Negative immunostaining of PELP1 in breast cancer tissues. b Moderate immunostaining of PELP1 in breast cancer tissues. c Strong immunostaining of PELP1 in breast cancer tissues. d Negative immunostaining of MMP-9 in breast cancer tissues. e Weak immunostaining of MMP-9 in breast cancer tissues. f Moderate immunostaining of MMP-9 in breast cancer tissues. g Strong immunostaining of PELP1 in breast cancer tissues. h Positive control of MMP-9 immunostaining (lung adenocarcinoma). Bar = 20um