Immunohistochemistry analysis of paraffin-embedded RPL4 in mouse liver tissue. Antigen retrieval was performed using citrate buffer. Samples were blocked with blocking buffer (1.5 hr, 22°C), incubated with RPL4 polyclonal antibody (Product # PA5-103548) using a dilution of 1:100 (1.5 hr, 22°C), followed by HRP conjugated goat anti-rabbit.