Scanning electron micrographs, human

Fig. 4 Human corneal endothelium following 3-hour perfusion with lactated Ringer s solution (a) scanning electron micrograph (2100 x) (b) transmission electron micrograph (9100 x ). (Courtesy of H. Edelhauser.)... 

FIG. 3. Chromosome arms begin to separate in pro metaphase. Scanning electron micrographs of human chromosomes isolated from cells in prophase (A), prometaphase (B), metaphase (C) and early anaphase (insert in C). Size bar, 1 /tm. Reprinted with permission from Sumner (1991). 

The polymer and glass microspheres employed in the pressure-sensitive release of chemicals range in size from 1 pm to 1 mm in diameter. (For comparison, a human hair is typically 80-100 pm in diameter.A scanning electron micrograph illustrating the morphology of the particles appears in color Fig. 14.2.1. ... 

FIGURE 23-16 Scanning electron micrograph of human adipocytes. 

FIGURE 18.3 Scanning electron micrographs of epidermal membrane treated with dry-etch and wet-etch silicon microneedles. The epidermal membrane, consisting of stratum corneum and viable epidermis, was obtained by heat separation of full-thickness human breast skin. The tissue was immersed in distilled water preheated to 60°C for 60 s and the upper layers carefully peeled off from the dermal layer using tweezers. Epidermal membranes were treated with microneedles for 30 s at an approximate pressure of 2 kg/cm2. (a) Dry-etch microneedle-treated epidermal membrane. Bar = 200 pm (b) wet-etch microneedle-treated epidermal membrane. Bar = 500 pm. 

A scanning electron micrograph of eyelashes growing from the surface of human skin. 

Fig. 1. (A) Scanning electron micrograph of human skin. The epidermis has pulled away from part of the basement membrane. (B and C) Transmission electron micrograph through the epidermal-dermal junction of human skin. Keratinocytes (KF) are the cells in the human epidermis. LD, The lamina densa of the basement membrane LL, the lamina lucida. Typical anchoring fibrils (AF) formed from type VII collagen are shown at higher power in C. Courtesy of Dr. K. Holbrook, University of Washington.

Figure 1.8. Scanning electron micrograph of a fracture surface through crown dentin of a human tooth. Various tubules are viewed in cross section. The dense envelope around the tubules is composed of peritubular dentin (PT). Intertubular dentin (ID) is...

A scanning electron micrograph of human RBC labeled with Immunolatex spheres of diameter 60 nm (600 A) and at a concentration of 20 mg/ml Is shown In Figure 6a. The same dense distribution of spheres was observed when the conjugate concentration was reduced ten fold. Markers of this size are readily seen In the SEM and can be used to Identify cells exhibiting specific surface euitlgens In either mixed cell populations or tissue specimens. 

Scanning electron micrographs of mouse spleen lynqphocytes labeled for surface Ig molecules with latex spheres are illustrated in Figure 9 Mai r of the labeled cells (B-cells) were found to have microvilli-like structures latex markers were densely distributed over their cell surface and microvilli. Recent SEM studies indicate that human T-lymphocytes, which form rosettes with sheep blood cells, also exhibit numerous microvilli on their surface. ... 

A scanning electron micrograph (SEIUI) of three neurons of the human cerebral cortex. Photograph by Secchi-Lecagu fkmssel-UCLAF/CNRI/Science Photo Library National Audubon Society CoSection/Photo Researchers, Inc. Reproduced by permission. 

Fig. 1 An example of excipient as carrier for drug particles. Scanning electron micrographs showing adhesion of recombinant human deoxyribonuclease I (rhDNase) particles to lactose (A) and mannitol (B).

A color-enhanced scanning electron micrograph of human red blood... 

Figure 6 Human comeal endothelium following three-hour perfusion with solution devoid of essential nutrients (A) scanning electron micrograph (2100x), (B) transmission electron micrograph (9100x). Source Courtesy of H. Edelhauser.

Colored Scanning Electron Micrograph (SEM) of human blood, showing red and white cells and platelets. Blood has effective buffers to maintain the pH at a constant value. 

These four structures, except for the medulla, are in all animal hairs. Figure 1-4 contains scanning electron micrographs of four mammalian species taken at different magnifications. These micrographs clearly demonstrate the cuticle scale structure of a cat whisker, a wool fiber, a human hair, and a horsetail hair. The cross sections of the horsetail hair also reveal the cortex and the porous multiple channels or units of the medulla characteristic of thick hairs, but generally absent from fine animal hairs. 

Figure 1. Hair fibers from different mammalian species upper left, scanning electron micrograph (SEM) of a cat whisker (l,510x) upper right, SEM of a human hair fiber (l,000x) lower left, SEM of a wool fiber (2,000x) lower right, SEM of sections of horse tail fiber (400x).

Figure 1-31. Scanning electron micrograph of a cluster of macrofibrils in a cortical cell of a human hair fiber. From a split hair.

Fig. 2. Scanning electron micrographs showing interactions between bacteria and host cells. (A) Digital image of methicillin-resistant S. aureus enwrapped within lamel-lapodia on the surface of a primary human neutrophil. (B) Photographic image of B. burgdorferi and a human lymphocyte. The spirochete appears to simultaneously penetrate and emerge from the B cell, lymphocyte (unpublished data). Bars, 500 nm.

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