Elevated Dengue Virus Nonstructural Protein 1 Serum Levels and Altered Toll-Like Receptor 4 Expression, Nitric Oxide, and Tumor Necrosis Factor Alpha Production in Dengue Hemorrhagic Fever Patients

Figure 1

Dengue virus nonstructural protein 1 (NS1) serum levels of patients with dengue fever (DF, ) and dengue hemorrhagic fever (DHF, ) during the acute phase and convalescence, measured by ELISA and expressed as median BRU × 10³/mL in a box plot. Equivalent symbols (, #) represent statistically significant differences () between groups.