The image is a black and white illustration of a bacterial chain from the Apex Chart (x 6,700). The chain is shown in a side-by-side comparison, with the left side showing a close-up view of the chain and the right side showing an illustration of the same chain. The chain appears to be elongated and has multiple layers, with each layer having a different shape and size. The image is labeled with the text "Bacterial Chain from Apex Chart" at the bottom.