Search Results

Search Results

Refine this search

1,417 results

Image

from article Clinical pathology

Result thumbnail
Overview of an automated chemical analysis system. Specimen racks are placed on a movable track that moves sequentially through sampling, read-out, and reporting stations in the course of multitest analyses.

Image

from article Clinical pathology

Result thumbnail
Microscopic examination of a stained peripheral blood smear. The field of view used for cell identification observed by the microscopist is projected on the monitor screen located behind the microscope.

Image

from article Clinical pathology

Result thumbnail
Capillary electrophoresis is used for DNA sequencing. Data are processed by a computer, which then converts the findings into a graphic display. This information is used to identify mutations, deletions, and insertions relating to human disease.

Image

from article Clinical pathology

Result thumbnail
Examination of an agarose gel with an ultraviolet light source to identify diagnostic fragments of DNA.

Image

from article Territoriality

Result thumbnail
The tiger (Panthera tigris) is highly territorial in its behavior. (Credit: Safique Hazarika Photography/Getty Images)

Image

from article Birth control

Result thumbnail
Effectiveness of various types of birth control. An asterisk indicates the number of pregnancies per 100 women using the method within the first year of typical use. (Credit: J. Trussell/Centers for Disease Control and Prevention)

Image

from article Biomedical chemical engineering

Result thumbnail
Schematic of a flow loop used to study the effect of controlled flow on the metabolism of cultured endothelial cells. Cells form a monolayer on one surface of a parallel plate flow chamber that is mounted in a loop for media circulation. The flow…

Image

from article Biomedical chemical engineering

Result thumbnail
Scanning electron micrograph of a biodegradable poly(L-lactic acid) foam of 91% porosity and 94-micrometer median pore diameter prepared by a particulate-leaching method which involved the casting of polymer/salt composite membranes followed by the…

Image

from article Biomedical chemical engineering

Result thumbnail
Designs for islet immunoisolation devices. (a) Intravascular devices. (b) Extravascular macrocapsules. (c) Extrovascular microcapsules.

Image

from article Arthritis

Result thumbnail
Comparison of normal and arthritic joints. Osteoarthritis (degenerative joint disease) and rheumatoid arthritis are two of the most common types of arthritis. (Copyright © McGraw-Hill Education )

Image

from article Arthritis

Result thumbnail
Colored x-ray of an arthritic hand of a patient with severe rheumatoid arthritis in all of the fingers. The thumb is at the top. (Credit: Science Photo Library/Alamy Stock Photo)

Image

from article Metallochaperones

Result thumbnail
A family of copper metallochaperones direct the trafficking of copper ions inside the cell. The schematic shows three distinct pathways of copper movement within a eukaryotic cell. Copper is first transported into the cell by the cell-surface copper…

Image

from article Scrapie

Result thumbnail
Poll Dorset sheep with severe clinical signs of scrapie.

Image

from article Scrapie

Result thumbnail
Photomicrographs of the brain from scrapie-affected animals showing (a) vacuoles in neurons of the medulla, (b) spongy degeneration, (c) astrocytic hypertrophy (astrocytic gliosis in mice).

Image

from article Sickle cell disease

Result thumbnail
A digitally colorized scanning electron micrograph (SEM) showing the ultrastructural morphology of a sickle cell red blood cell. This sickle-shaped red blood cell was obtained from a blood specimen of an 18-year-old female patient with sickle cell…

Image

from article Sickle cell disease

Result thumbnail
Illustration showing the differences between normal and sickled red blood cells (RBCs). (A) Normal RBCs flow freely in a blood vessel. The inset shows a cross section of a normal RBC with normal hemoglobin. (B) Abnormal, sickled RBCs block blood…

Image

from article Sickle cell disease

Result thumbnail
Scanning electron micrographs of (a) an oxygenated sickle red blood cell and (b) a deoxygenated sickle red blood cell. The appearance of the oxygenated sickle cell is indistinguishable from a normal red blood cell. (Credit: James White)

Image

from article Carbohydrate

Result thumbnail
Monosaccharides with various numbers of carbon (C) atoms. Monosaccharides constitute the simplest form of carbohydrates and cannot be hydrolyzed to smaller units. (Copyright © McGraw Hill)

Image

from article Carbohydrate

Result thumbnail
The stereoisomers (d and l configurations) of glyceraldehyde and glucose. (Copyright © McGraw Hill)

Image

from article Carbohydrate

Result thumbnail
Linear and ring forms of d-glucose. (Copyright © McGraw Hill)

Image

from article Carbohydrate

Result thumbnail
Dehydration synthesis of a sucrose molecule by the condensation of glucose and fructose. (Copyright © McGraw Hill)

Image

from article Carbohydrate

Result thumbnail
Two common disaccharides: lactose and maltose. (Copyright © McGraw Hill)

Image

from article Hunger

Result thumbnail
Principles of appetite regulation by gut–brain peptides. Tissues and organs, including the pancreas, stomach, small intestine, adipose tissue, and large intestine, are sources of peptides that stimulate or inhibit appetite-regulating neurons in the…

Image

from article Visual impairment

Result thumbnail
Major causes of blindness among Americans: (a) whites; (b) blacks. Glaucoma is more important among blacks; age-related macular degeneration is more important among whites. These preliminary data are from the Baltimore Eye Survey. Other causes of…

Learn more about AccessScience

a female college student looking at the screen of her silver-cased laptop computer
Watch the YouTube video

flyer thumbnail

Download the flyerGet Adobe Acrobat Reader pdf icon