Western Blot. Positive WB detected in: Arabidopsis thaliana leaf tissue, Chlamydomonas tissue, Green alga tissue, Chlamydomonas reinhardtii tissue. All lanes: rbcL antibody at 1:1250. Secondary. Goat polyclonal to rabbit IgG at 1/50000 dilution. Predicted band size: 53 kDa. Observed band size: 53 kDa.