FIGURE 3: Ultrastructure of double delete scs3∆ yft2∆ cells. Transmission EM images of (A) wild-type cell and (B) a gallery of scs3∆ yft2∆ cells. In the latter there are tangles of membrane (arrowheads in B), which are absent from the former, although these occasionally have very small stacked membranes (arrow in A). Size bars are all 1 µm.