Fig. 2

CXCL12 and CXCR4 were both expressed in primary human first-trimester EEC cultures in vitro. Immunofluorescence staining of both CXCL12 and CXCR4 protein was detected in the primary cultured human first-trimester endometrial epithelial cells (EECs). a: CXCL12 expression (red fluorescence) in EECs. b: CXCR4 expression (green fluorescence) in EECs. c: DAPI staining in EECs. d: Merged picture. Magnification: × 400