The development of a complex organ involves the specification and differentiation of diverse cell types constituting that organ. Two major cell subtypes. contractile cardial cells (CCs) and nephrocytic pericardial cells (PCs). comprise the Drosophila heart. https://www.roneverhart.com/BRExhaust-2004-2006-Nissan-TITAN-5-6L-Direct-Fit-Replacement-Exhaust-System/