COUCH: DISEASES AND PARASITES OF PENAEID SHRIMPS 





FIGURE 4.— Phase contrast micrograph of fresh squash preparation of heavily, patent, virus-infected hepatopancreas from pink 

 shrimp, note hypertrophied nuclei (arrows) and characteristic refringent PIB's. x 1,000. 



FIGURE 5.— Phase contrast micrograph of fresh squash showing PIB's (arrows) of varying sizes, some free of nuclei following 

 nuclear rupture, x 1,000. 



