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. 2021 Aug 11;11:16287. doi: 10.1038/s41598-021-95705-0

Figure 4.

Figure 4

Validation of in vivo protein expression by immunohistochemistry (IHC). (AB) In vivo protein expression showing LPAR1 and ALDH1A1 expression in the endometrial stroma in Ctrl and PCOS; n = 6, proliferative endometrium (PE): cycle day (6–9); Ctrl, PCOS; n = 5, secretory endometrium (SE): collected 9–10 days after the luteinizing hormone surge. (CD) Whole biopsy samples from PE and SE in Ctrl and PCOS were used for IHC staining to identify LPAR1 and ALDH1A1 proteins. For every patient, 3 different areas (700 × 700 µm) on each slide were considered and stroma was separated from the glandular epithelium manually for staining quantification. Scale bar 100 µm; NC; negative control.