In the spiny lobster (Panulirus interruptus) the prophenoloxidase is located in plasma not in haemocytes.

@article{HernndezLpez2003InTS,
  title={In the spiny lobster (Panulirus interruptus) the prophenoloxidase is located in plasma not in haemocytes.},
  author={J. Hern{\'a}ndez-L{\'o}pez and T. Gollas-Galv{\'a}n and S. G{\'o}mez-Jim{\'e}nez and Guillermo Portillo-Clark and F. Vargas-albores},
  journal={Fish & shellfish immunology},
  year={2003},
  volume={14 2},
  pages={
          105-14
        }
}
In the spiny lobster (Panulirus interruptus), unlike other crustaceans most of the prophenoloxidase (proPO) was detected in cell-free plasma (86.3%). In spite of its location, lobster proPO activating system has a similar activation mechanism to other crustacean proPO systems. Haemocyte lysate was able to activate the plasma proPO indicating location of the prophenoloxidase activating enzyme (PPAE) in haemocytes. Lobster haemocyte PPAE was isolated by affinity chromatography and its… Expand
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