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. 2022 Nov 8;10:1022747. doi: 10.3389/fcell.2022.1022747

FIGURE 4.

FIGURE 4

Microscope images (20X) of viral RNA and ACSL4 protein staining in placental villous tissues among specimens with negative PSS staining. RNA-ISH with use of RNAScope HD-RED kit and immunohistochemical staining (IHC) were performed to determine the abundance of the viral RNA genome and ACSL4 protein, respectively.