Greatly enlarged 2 piece model includes small pseudopodium that can be opened to show the internal structure as seen during electron microscopic magnification.
This model of the HIV virus is enlarged millions of times to show the outer lipid membrane with protein structures and the internal nucleoproteins and contained RNA.
Model clearly shows the oral groove and their continuation into the gullet and the other side shows the details of the internal structure. The basic model shows details in a lower relief, while the standard model shows a finer detail level.