2.5. Preparation of white spot syndrome virus (WSSV) positive shrimp
tissue
Fifty microliters of a WSSV inoculum, obtained from shrimps of
Guasave (Sinaloa, Mexico) was injected to juvenile shrimps (5–8 g) in
the second abdominal segment with an insulin syringe. After 24 h, the
moribund shrimps were euthanized, after that gills and muscle were removed
and stored at −80 °C until used for tissue preparation. A gill lamellae
was tested to verify WSSV load by single or nested polymerase
chain reaction (PCR) with Kimura et al. (1996) primers. To prepare
shrimp infected tissue as food, shrimps were thawed and cut into fine
pieces with a scalpel.