Didinium nasutum showing the two prominent girdles of cilia in full metachronous beat. If you look at higher magnification you will see the occasional short, blunt clavate cilia. These are known to no...

These two micrographs show the outer cell surface of the epithelial cell border in intestine (upper) and stomach (lower) tissue. This surface, called the glycocalyx, is composed of negatively charged...

This electron micrograph shows the basal lamina as a thin gray moustache following parallel along the basal membrane of epithelial cells from human corneal epithelium. In this tissue, the basal lamin...

Sarcolemma of skeletal muscle prepared by a quick-freeze deep-etch method also shows the basement membrane (lamina externa, labeled here as the basal lamina) associated with the muscle fiber. This me...

Scanning electron micrograph of the surface of a peritoneal mast cell from mouse shows undulating folds, and few microvilli. The membrane folds could be misinterpreted for microvilli if analyzed in t...

Electron micrograph showing fingerprint like ridges called microplicae on the surface of fish skin epidermis from the neon tetra. These ridges offer mechanical reinforcement against trauma and help ho...

Pseudopods jut out from this polymorphonuclear leucocyte of the guinea pig to enable amoeboid motility. Organelles are initially excluded as the pseudopod first forms, but they flow in as the pseudopo...

Scanning electron micrograph of a 3T3 cell growing in culture. Complexity and diversity of structure across the cell surface is apparent in the this image that s courtesy of Susan Brown. Figure 48 fr...

A thin section through a macrophage from interstitial tissue of the testes of the opossum. These cells are characterized by extensive folding of the cell surface, some of which appear to have captured...

Figures 264 (upper) and 265 (lower) from Chapter 8 (Lysosomes) of 'The Cell, 2nd Ed.' by Don W. Fawcett M.D. Lysosomes apparent in thin sections from liver tissue of hamster treated with phenobarbito...