Scientific Illustration

cjohnstonbioart:

H. pylori bacteria (WIP)

The next step in the development of the H. pylori model. After finding some new electron microscope images of the bacteria I decided to remodel the body of the bacteria so that it showed off the corkscrew shape better.

This model will be a part of a larger illustration depicting an H. pylori bacterial infection in the lining of the stomach, just before the formation of a gastric ulcer.

cjohnstonbioart:

Helicobacter pylori bacteria (WIP)

H. pylori is a bacterium that lives in the stomach and duodenum (first section of the small intestine). They burrow through the mucin (a layer of gel-like mucus that protects the walls of the stomach from the acidic gastric juices) lining the stomach to reach the underlying tissue. H. pylorie is specially adapted to surviving the acidic environment of the stomach by releasing an enzyme, called urease, that converts urea into a cloud of acid neutralizing chemicals that protect the bacterium. It can be passed from person to person through direct contact with saliva, vomit, or fecal matter.

If the H. pylori infection is left untreated it can lead to chronic gastritis (inflammation of the stomach lining). The H. pylori bacteria may eventually wear a hole in the stomach’s protective mucin layer, leading to the formation of a gastric ulcer (a sore in the lining of your stomach).

(via articulomortis)

A schematic diagram illustrating a possible model for the exosporium of the Bacillus cereus family.

Surface architecture of endospores of the Bacillus cereus/anthracis/thuringiensis family at the subnanometer scale

Surface architecture of endospores of the Bacillus cereus/anthracis/thuringiensis family at the subnanometer scale

“Projection maps for the two crystal types. (A) Projection map with p3 symmetry at 6 Å resolution for parasporal layer crystals. Contours are at intervals ∼0.3× root-mean-square density. Contours below average density are not shown. The approximate projection of the envelope of an individual trimer as determined by Ball et al. (3) is indicated by the filled gray circle. The six densest features are circled in magenta with their symmetry mates in blue. a = b = ∼67 Å. (B) Projection map with p6 symmetry at 8 Å resolution for basal layer crystals. Features are as described above. a = b = ∼80 Å.”

Bacillus prodigiosus and Bacillus subtilis

From: Micro-organisms in water by Percy Frankland and Mrs. Percy Frankland

fieldnotesbiologyculture:

Macrophage and Bacterium 2,000,000X; watercolor by David S. Goodsell, 2002

(via microculture)

Plate culture, Endo’s medium (Agar) showing typhoid and colon colonies

From Medical bacteriology by John Augustus Roddy

biomedicalephemera:

Bacteriologic Chart

1. Gonococcus spp.
2. Pneumococcus spp.
3. Streptococcus pyogenes
4. Micobacterium tuberculosis
5. Vibrio cholerae
6. Corynebacterium diphtheriae
7. Bacterium typhosum
8. Bacterium dysenteriae
9. Achorion Schonleinii [favus fungus]
10. Bacillus anthracis
11. Bacillus aerogenes capsulatus
12. Yeast cells - With buds and ascospores depicted

Deadly diseases are almost pretty, when stained and smeared on a microscope slide…

Postmortem Pathology. Henry W. Cattell, 1906.

decaturjim:

Explore The Human Microbiome

The human microbiome refers to all of the microbial organisms that reside in the body including bacteria, fungi, and archaea.  Notably, the human body contains over 10 times more microbial cells than human cells.

To illustrate the diversity of these ‘body bugs’, Scientific American have profiled this impressive, interactive map of the key microorganisms commonly identified in the human body and their predominant location.

Interest in the human microbiome has increased in recent years, following reports that the type and number of microorganisms seem to play a role in the onset of several medical conditions including obesity, cancer, and diabetes. 

(via freshphotons)