By: Virginia Gaces
Interfering substances, like proteins, are usually present in blood specimens for testing. These substances, if not eliminated, would be a contributory factor to the inaccuracy of laboratory results because they may increase or decrease the readings of other substances tested in blood. When protein content...
Manual pipetting: What are the precautions which need to be taken
By: Virginia Gaces
Automation is the trend in clinical laboratories today because it saves time, avoids human errors and could perform several procedures simultaneously. Even in the pipetting of liquids, reagents or samples, manual pipetting is rarely utilized. It is not an excuse however, not to learn the...
By: Erich Rosenberger M.D.
There are literally thousands of different types of bacteria. Since the start of civilization (and even before) bacteria have been the leading cause of death and disease. We fight a constant battle against these microscopic critters - and usually loose those battles. The bacilli are...
By: Erich Rosenberger M.D.
Scientists love to categorize the various types of lifeforms on Earth. One of the most basic categories are prokaryotes. This refers to the type of cell that makes up the organism. Most prokaryotes are single-celled organisms, although there are a few multi-cellular prokaryotic species. Prokaryotes...
By: Erich Rosenberger M.D.
Life on Earth takes on many different forms. One of the most basic categories of life the nature of the cells that constitute an organism. There are two major types of cells, eukaryotes and prokaryotes. Prokaryotes are bacteria, while every plant and animal is made...
By: Erich Rosenberger M.D.
Because bacteria are almost impossible to see without the aid of a microscope, it is sometimes hard to believe that there are significant differences between them. But bacteria are very, very different. There are literally tens of thousands of different types of bacteria, maybe more...
Tips for using a compound light microscope
By: Tami Port MS
When using a compound light microscope (a scope with two sets of lenses) students frequently become discouraged after the object they are trying to view can't be found at all or repeatedly disappears from view every time the scope is switch to a higher objective...
By: Omar Salvador
The plant or plantlike organisms we call algae are ubiquitous in habitat and vary widely in many characteristics, including in form, structure, and size. Some algae are microscopic in size and are smaller than some bacteria, while others can become many feet in length, examples...
Beneficial microbes found on and in the human body
By: Tami Port MS
Within the womb, a baby’s body is axenic, meaning that the uterus is sterile and free of microbes, but soon after birth, the newborn becomes colonized by microbes, most of which are beneficial to human health. These microbes are called normal flora or normal...
How to interpret beta hemolysis on blood agar bacterial growth media
By: Tami Port MS
Some growth media, such as Blood Agar (BAP), can be used to do more than just grow bacteria; specialized agars can be used to help identify microbes.* Blood Agar Is a Differential Medium *A growth medium is considered differential if, when specific microbes are...

 

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