Fig. 4From: Airway and systemic biomarkers of health effects after short-term exposure to indoor ultrafine particles from cooking and candles – A randomized controlled double-blind crossover study among mild asthmatic subjectsMargins plot of the adjusted means in biomarkers in exhaled air Legend: For each of the three exposures clean air, cooking, and candles Surfactant Protein-A and albumin were measured before exposure (0 h), and following exposure corresponding to 5 h after and 24 h after exposure start as depicted on the x-axis. SP-A and albumin are reported in % of the sampled materialBack to article page