alpha ‑L‑Iduronidase/IDUA was detected in immersion fixed HepG2 human hepatocellular carcinoma cell line using Sheep Anti-Human alpha ‑L‑Iduronidase/IDUA Antigen Affinity-purified Polyclonal Antibody (Catalog # AF4119) at 15 µg/mL for 3 hours at room temperature. Cells were stained using the NorthernLights™ 557-conjugated Anti-Sheep IgG Secondary Antibody (red; Catalog # NL010) and counterstained with DAPI (blue). Specific staining was localized to cytoplasm. View our protocol for Fluorescent ICC Staining of Cells on Coverslips.