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Survival rate analysis of silkworm transgenic lines. Survival rate analysis of transgenic hybrid silkworm lines after inoculation of fourth instar larvae with: (A) 2 × 105 OBs/larva, (B) 1 × 106 OBs/larva, (C) 1 × 107 OBs/larva, and (D) 1 × 108 OBs/larva. Each transgenic line was screened in triplicate, each replicate included 30 larvae, and mortality statistical analysis was conducted 10 days after inoculation.
