This image shows the organization of adenovirus cement proteins with respect to major capsid proteins.  Hexon and penton are shown in khaki and magenta, respectively. Cement protein scaffold (top right) and its cross-section (bottom right) shows that capside proteins are organized in two layers. The outer layer comprises proteins IIIa (purple) and IX (blue), which form a hexagonal lattice (left; cyan), while the inner layer consists of proteins V (green), VI (Red) and VIII (orange). (Image by Vijay Reddy and Glen Nemerow.)