By: Dr. Bryan Katz
The human blood clotting cascade consists of a tightly regulated network of enzymes designed to contain damage to the blood vessels by means of coagulation, thus restoring vascular integrity. Briefly, when a blood vessel suffers penetrating trauma, blunt force trauma, or an internal rupture, the...
By: Jeffrey Graf
Diagnosing heart failure candidates presents a challenge for cardiologists because heart disease may be progressing while the heart is apparently pumping normally. Direct observation of the coronary arteries, those that supply the heart itself, is invasive or requires interpretation of indirect measurements through medical imaging...
By: Dr. Bryan Katz
Staphylococcus is a gram positive bacterium that occurs almost ubiquitously; most people carry staph organisms on their skin surfaces and nasal passages. Intact skin and mucosa are generally effective barriers to staph infections. Unfortunately, the converse is also true, with staph being the chief culprit...
By: Patrick Sills
When a portion of humans celebrate their 100th birthday and have thus avoided the inevitable arrival of death a good 20 years beyond the time most will, such individuals are labeled as centenarians. So what comes to mind when you hear the term, super-centenarian? Do...
Types of Staphylococcus bacteria that infect humans
By: Kate Eglan-Garton
Staphylococcus is a specific type of bacterial infection that can attack the human body at any time. Although there are more than 20 species of Staphylococcus, only two interact with humans according to Bergey’s Manual (2001) on systematic bacteriology. The first type is called...
By: Patrick Sills
The following should seem quite obvious: Every human needs blood in order to survive. This complex tissue is a necessary element that travels through the body and carries out many different functions. In some people, molecules of antigens known as agglutinogens are attached to red...
By: Gioia Degenaars
Blood types are genetically inherited and come in four variations. The four blood types are A, AB, B and O. Blood types are inherited differently than other trains. Each individual receives one allele (a location on a gene that codes for a trait) from their...
By: Amelia Emery
Biotinidase deficiency is a genetic metabolic disorder that affects the body’s ability to produce and possess the active enzyme biotinidase. Biotinidase is necessary for the extraction of biotin, an essential B vitamin, from food sources into a usable form as well as reusing and...
Disorders associated with changes in chromosome 15
By: Effie Moore Salem
Chromosomes are DNA molecules within cells and within these threadlike structures are coils of proteins that support the purpose and function of the cell. Each person has 46 chromosomes which amount to 23 pairs. Chromosomes are blueprints for growth and for the future activity of...
The genetics of blood type
By: Mark Standland
To the naked eye blood can look like a simple red fluid but in reality it is a complex living tissue containing a large number of cell types and proteins that differs from person to person. To be able to distinguish people who share the...

 

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