4.3.1.2. Agent isolation and identification
Isolation of RSIV and ISKNV is undertaken using the Grunt fin (GF) cell line. Spleen and/or kidney
tissues from diseased fish are suitable samples. Cells should be grown in L-15 medium supplemented
with 10% fetal bovine serum (FBS) at 25°C in a temperature-controlled incubator to ensure subsequent
success in the isolation of RSIV. Viruses to be used as positive controls can be obtained from the OIE
Reference Laboratory for RSIVD. Use uninfected cells as negative controls. Following development of
viral cytopathic effect (CPE), virus identification would be undertaken using either antibody-based
antigen detection (IFAT) and/or nucleic acid-based methods (PCR).
4.3.1.2.1. Cell culture/artificial media
4.3.1.2.1.1 Isolation of RSIV and ISKNV in cell culture
Inoculation of cell monolayers