Zebrafish larvae mount a leukocytic response to trinitrobenzene sulfonic acid (TNBS) exposure. Left column is control and right column is TNBS-exposed. A: Comparison of neutrophil distribution in 6 days postfertilization (dpf) TG(mpx:EGFP)114. Larvae exposed to TNBS demonstrated a redistribution of leukocytes away from the CHT region. B: Comparison of confocal microscopy images of double transgenic TG(mpx:EGFP114, ifabp:RFP) larvae expressing EGFP in neutrophils and RFP in intestinal epithelial cells. C: Three-dimensional reconstruction of confocal microscopy data illustrating two angles. Scale bars in A and B represent 100 μm. CHT, caudal hematopoietic tissue. EGFP, enhanced green fluorescent protein. RFP, red fluorescent protein.
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