Abstract Background Pneumocystis carinii causes pneumonia in immunocompromised patients with a high morbidity and mortality rate. but the interaction between this organism and the host cell is not well understood. The purpose of this research was to study the response of host cells to P. carinii infection on a molecular level. https://www.roneverhart.com/Gildan-Heavy-Cotton-T-Shirt-Antique-Orange-Gildan-5000/