In comparison to rag1+/+ control zebrafish, rag1−/− mutants showed elevated basal levels of most crps but unaltered crp6 and 7 levels and the downregulated crp2. Furthermore, SVCV infection increased just moderately the expression of most crp genes, except for crp2 and crp6, which remained unaltered. Here, RAG1 is linked to infection.