A tangential section through the buccal cavity showing the close spacing of the cilia in the undulating membrane and 3, presumably nonciliated basal bodies, in the inside row. Accessory microtubular ribbons arise from the basal bodies of the inner row and extend upward toward the oral ribs. Microtubular ribbons in the oral ribs are sectioned obliquely and alveolar segments lie between the ribbons. Portions of two membranelles are seen in the buccal cavity. TEM taken on 8/15/67 by R. Allen with Philips 200 operating at 60kV. Neg. 12,400X. Bar = 0.5µm. A print of the negative was scanned and processed in Photoshop. This image is best used for qualitative analysis. A high resolution image (CIL:34846) is available for quantitative analysis.