Articles related to "Bacteriology"

Bacteriology had it wrong for the past 300 years. Bacteria don't live alone. They live collectively in layers of slime where they do their own thing but do it together.

Acid fast staining involves the application of a series of dyes that leaves some bacteria pink (Acid-fast) and others purple (Nonacid-fast). Here's how this stain works.

Antibiotics are drugs used to fight bacterial infections. How do these medications work to kill bacteria without harming human cells?

Antibiotics are chemotherapeutic agents used to inhibit or kill bacteria (prokaryotic organisms). How do they destroy bacteria without hurting our cells?

Antibiotics are chemotherapeutic agents used to inhibit or kill bacteria (prokaryotic organisms). How do macrolides destroy bacteria without hurting our cells?

Antibiotics are chemotherapeutic agents used to inhibit or kill bacteria (prokaryotic organisms). How does penicillin destroy bacteria without hurting our cells?

Antibiotics are chemotherapeutic agents used to inhibit or kill bacteria (prokaryotic organisms). How do quinolones destroy bacteria without hurting our cells?

Antibiotics are chemotherapeutic agents used to inhibit or kill bacteria (prokaryotic organisms). How do tetracyclines destroy bacteria without hurting our cells?

Antibiotics are chemotherapeutic agents used to inhibit or kill bacteria (prokaryotic organisms). How do aminoglycosides destroy bacteria without hurting our cells?

Differential stains and media can provide preliminary identification of microbes, but to identify Gram- bacteria to the species, a more sophisticated test is required.

There are three types of symbiotic relationships that microbes can have with their host organism: mutualism, commensalism and parasistism.

Gram, Acid Fast and Endospore stains; MacConkey's, Mannitol Salt, and Blood Agar media as well as the API-20 test strip all provide information to identify microbes.

Most Gram-negative bacteria have hair-like projections external to their cell's wall. One type, fimbriae, allows bacteria to stick together and attach to host cells.

Thomas Hucker, a student of bacteriology at Yale University, serendipitously contributed one of the most used modifications of a fundamental technique to microbiology.

Morning's the worst of it; when that sticky, smelly film covers teeth and tongue. Some call it morning breath, or dragon breath, but what really causes halitosis?

Meningitis is an inflammation of the meninges that line and protect the brain and spinal cord. It occurs when bacteria or viruses breech the blood-brain barrier.

Prokaryotic cells can have a variety of surface appendages - flagellum, fimbria or pilus - that enable them to move, adhere to surfaces and even infect host cells.

Most bacteria have one of these two types of cell walls. The differential Gram stain uses two dyes to distinguish between bacteria based on cell wall structure.

Gram- bacteria stain pink due to the location of cell wall peptidoglycan and an external LPS membrane. Here's how Gram staining identifies Gram negative organisms.

Most bacteria have one of these two types of cell walls. The differential Gram stain uses two dyes to distinguish between bacteria based on cell wall structure.

Gram + bacteria stain purple due to the chemistry and structure of their peptidoglycan cell wall. Here's how Gram staining identifies Gram-positive organisms.

Antibiotics are chemotherapeutic agents used to inhibit or kill bacteria (prokaryotic organisms). How do sulfonamides impact bacteria without hurting our cells?

Selective media inhibit the growth of certain microbes, providing general information regarding the bacteria that are able to grow on these specialized types of agar.

The distinction between species of sexually reproducing organisms is quite clear, but how are the lines drawn for organisms, like bacteria, that reproduce as clones?

Endospores are somewhat like bacterial seeds, tough structures that allow some bacteria to go dormant under unfavorable conditions.

There are good staph bacteria (Staphylococcus epidermidis), bad staph (Staphylococcus aureus), and really bad, pathogenic staph (MRSA). Here's a comparison.

Gram staining involves the application of a series of dyes that leaves some bacteria purple (Gram +) and others pink (Gram -). Here's how the Gram stain works.

In microbiology, there are many different techniques used to identify microbes. Differential media typically provide general information regarding identity.

Some bacteria have an additional layer outside of the cell wall called the glycocalyx. This coating of macromolecules protects the cell and helps it adhere to surfaces.

Is it the flu, a cold or a bacterial infection? A fast test to screen for influenza virus takes the guesswork out of treatment.

Medications and vaccines are available to treat and prevent some STIs. Still these diseases are on the rise. Many cause no symptoms; spread by those unaware of infection.

In the 19th century, it was possible for whole families to die from diseases such as cholera, typhoid and smallpox and giving birth was a risk for both mother and child.

Bdellovibrio bacteriovorus feasts on disease causing gram negative bacteria, making them potentially useful as 'living antibiotics'.

Bill Bryson explores the wonders of time and space, adapting his well-known adult text into an illustrated version suitable for readers aged 8 years and older.

Dr Edward Bach was the founder of flower remedies, known as Bach flower therapy; although there are other flower remedies, the Bach flower remedies are the most popular.

Endospore staining involves application of a series of dyes. Malachite green stains endospores and safrinin dyes vegetative cells pink. Here's endospore stain procedure.

Bacteriophages are a special type of virus that exclusively infects bacterial cells. Here's how they recognize, take over and ultimately kill their host bacteria.

This collection of articles provides basic information about prokaryotic and eukaryotic cells, their structure, function, differences and similarities.

Blood Agar is a bacterial growth medium that can distinguish normal from pathogenic bacteria based on the effect of bacterial hemolytic enzymes on red blood cells.

All living things are composed of one or more cells. Unlike cells, viruses, viroids and prions are acellular, nonliving parasites that require a living host to reproduce.

C. diff is a hospital-acquired bacterial infection of the gastrointestinal tract that is becoming difficult to treat in some countries.

Clostridium difficile (aka C. diff or CDF) has recently emerged as a serious infectious agent, both deadly and resistant to antibiotics. Why is C. diff a superbug?

Infectious disease can result of cellular organisms, such as bacteria (prokaryotes), from eukaryotes (cells like ours) or from nonliving infectious agents.

Oxygen is required for cells to break down organic molecules in the most energy-efficient way. How do microbes that live under conditions of low or no O2 metabolize food?

Bacteria in the genus Streptococcus can be classified by species, hemolysis pattern and by their antigens, chemicals to which the human immune system reacts.

Bacterial controls are often used with differential stains as examples of typical positive and negative stain reactions; helpful references when identifying unknowns.

After completing a classroom experiment in which students take oral samples to see if mouthwash reduces the number and variety of bacteria, this is how data are examined.

In this simple classroom experiment students take oral swab samples to see if the use of mouthwash reduces the number and variety of oral bacteria found in the mouth.

The eukaryotic cells of plants and animals possess several critical differences from prokaryotic cells, including a nucleus and other membrane-bound organelles.

Bacteria are living cells with DNA genomes that direct the production of enzymes required for metabolism. Viruses are not alive. What does the viral genome do?