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. 2014 Jun;82(6):2615–2625. doi: 10.1128/IAI.00022-14

TABLE 4.

LD50 of the wild-type S. agalactiae GD201008-001 strain, hylB mutant, and complemented strain in zebrafish

Strain No. of dead animals/total no. tested at challenge dose (CFU) of:
LD50 (CFU)
1.0 × 105 1.0 × 104 1.0 × 103 1.0 × 102 50
WT 15/15 13/15 12/15 7/15 4/15 1.31 × 102
ΔhylB mutant 15/15 11/15 8/15 3/15 1/15 7.94 × 102
hylB complemented strain 15/15 12/15 10/15 6/15 3/15 2.37 × 102