Fig. 5
From: Isolation and characterization of acid-soluble bluefin tuna (Thunnus orientalis) skin collagen
Determination of the antibody reactivities of PBT, calf, and salmon collagen. a Direct ELISA, b sandwich ELISA, and c inhibition ELISA. An IgG-purified guinea pig antibody against salmon type I collagen was used. All ELISA were performed in triplicate and the data were expressed as the mean value