The PPO isoform, with a MW of 220 kDa, might be dominated by
an isoform having a MW of 210 kDa, which was predominant in
cephalothorax. Higher proportion of cephalothorax to carapace
was associated with a dilution of the PPO isoform, with a MW of
220 kDa, by proteinaceous substances in cephalothorax