MoHamed Al-Samarai, Abdul Ghani, and Amina Hamed Al Obaidy. 2023. “Effect of Steroids and Black Seed Oil on Hydrogen PeroxideConcentration and PH of Expired Breath Condensate InAsthmatic Patients”. Tikrit Journal of Pharmaceutical Sciences 5 (2):192-202. https://doi.org/10.25130/tjphs.2009.5.2.10.192.202.