Western Blot. Positive WB detected in: Zebrafish heart tissue, Zebrafish liver tissue, Zebrafish brain tissue, Zebrafish eye tissue. All lanes: fas antibody at 3.1µg/ml. Secondary. Goat polyclonal to rabbit IgG at 1/50000 dilution. Predicted band size: 34 kDa. Observed band size: 42 kDa