tissue exposed to (I) no primary, (]) antibodies to avian collagen I, or (K) collagenase digestion followed by antibodies to avian collagen I, as described {11). Data in (I), (J), and (K) were collected at 149-ms integration. in Analyses of Soft Tissue from Tyrannosaurus rex Suggest the Presence of Protein

tissue exposed to (I) no primary, (]) antibodies to avian collagen I, or (K) collagenase digestion followed by antibodies to avian collagen I, as described {11). Data in (I), (J), and (K) were collected at 149-ms integration.