COUCH: DISEASES AND PARASITES OF PENAEID SHRIMPS 



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Figure as. — a. Hepatopancreatic cell profiles revealing nuclei with small vesicles (20-50 nm) (white arrows) in nucleoplasm from 

 shrimp exposed to 3 ppb Aroclor 1254; also note cytoplasmic degeneration (black arrow); compare with more normal cell in lower right 

 comer, x 14,400. b. Hepatopancreatic cell profile showing nucleus with major large vesicles (100-700 nm) (arrows) in nucleoplasm; 

 note also dense bodies in nuclear envelope from PCB-exposed shrimp, x 28,500. 



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